List of Mercury-crossing minor planets

Last updated

A Mercury crosser is an asteroid whose orbit crosses that of Mercury. The Mercury crossers proper have aphelia outside Mercury's (0.4667 AU) and perihelia inside Mercury's (0.3075 AU), whereas those listed here as outer grazers have perihelia within Mercury's aphelion but not within its perihelion. All have semi-major axes larger than Mercury's, and hence there are no known inner grazers.

Contents

List

Mercury crossers proper have aphelia outside Mercury's (0.4667 AU) and perihelia inside Mercury's (0.3075 AU). As of 18 November 2020, 362 Mercury crossers were known. [1] (Most values have been rounded to three decimals.)

Designation p
(AU)
a
(AU)
Q
(AU)
i
(°)
e H Orbit
class
Notes
2005 HC4 0.0711.8233.5758.4040.961320.7 Apollo Has the smallest perihelion of any known asteroid. [1]
2020 BU13 0.0732.4704.8679.1570.970421.3 Apollo Has the second-smallest perihelion of any known asteroid, and the highest eccentricity of any known asteroid in the inner solar system. [1]
2017 TC10.0762.4904.9049.2880.969520.8 Apollo Has the third-smallest perihelion of any known asteroid.
2017 MM7 0.0792.0624.04523.4600.961621.1 Apollo
2008 FF5 0.0792.2784.4762.6220.965123.1 Apollo
2015 EV 0.0812.0323.98311.3560.960322.5 Apollo
394130 2006 HY51 0.0822.5895.09633.4550.968417.1 Apollo Has the smallest perihelion of any numbered asteroid. [1] 1.218 ± 0.218
2021 AF3 0.0861.3142.5427.2710.934923.2 Apollo
2016 GU2 0.0872.0544.02110.2770.957524.0 Apollo
2019 JZ60.0912.4754.86024.2290.963321.0 Apollo
2019 AM130.0911.2962.50216.6490.929822.0 Apollo
137924 2000 BD19 0.0920.8761.66125.7320.895017.2 Aten Has the second-smallest perihelion of any numbered asteroid. [1] 0.970 ± 0.39
374158 2004 UL 0.0931.2662.44023.7770.926618.8 Apollo Has the third-smallest perihelion of any numbered asteroid. [1]
394392 2007 EP88 0.0960.8371.57920.7470.885918.5 Aten Has the fourth-smallest perihelion of any numbered asteroid. [1] 0.636 ± 0.038 kilometers
2011 KE 0.1002.2064.3125.8800.954519.8 Apollo
465402 2008 HW1 0.1032.5875.07010.4850.960017.3 Apollo Has the fifth-smallest perihelion of any numbered asteroid. [1]
2015 HG 0.1052.1004.09517.7340.950121.0 Apollo
2012 US68 0.1052.5034.90125.8080.957918.3 Apollo
2011 XA3 0.1091.4672.82528.0260.926020.4 Apollo
2018 GG50.1101.9873.86416.7570.944719.8 Apollo
399457 2002 PD43 0.1102.5084.90626.0310.956019.1 Apollo
386454 2008 XM 0.1111.2222.3345.4470.909220.0 Apollo 0.367 ± 0.009 kilometers
431760 2008 HE 0.1122.2614.4109.8250.950418.1 Apollo
2020 DD0.1162.4834.8492.3380.953423.5 Apollo
276033 2002 AJ129 0.1171.3702.62415.4570.914918.7 Apollo
2019 VE30.1171.1742.2312.5360.900623.3 Apollo
2020 GB20.1172.3394.56115.2240.950021.1 Apollo
425755 2011 CP4 0.1180.9111.7059.4430.870321.2 Aten
1995 CR 0.1190.9071.6954.0670.868421.7 Aten
2007 GT3 0.1211.9933.86625.4250.939319.7 Apollo
2000 LK 0.1212.1844.24716.5750.944518.4 Apollo
2020 HY20.1242.3144.50411.3940.946224.9 Apollo
2017 AF5 0.1242.4794.83320.9130.949817.7 Apollo
2004 QX2 0.1251.2852.44519.0550.902521.7 Apollo
2019 YV20.1261.2272.3286.4600.897221.9 Apollo
2011 BT59 0.1302.4714.8123.5720.947421.0 Apollo
289277 2004 XY60 0.1300.6401.15023.7620.796718.9 Aten
2015 KO120 0.1301.7813.4332.0960.926922.0 Apollo
2007 PR10 0.1331.2322.33120.9300.892420.9 Apollo
504181 2006 TC 0.1361.5382.94119.6080.911918.7 Apollo
2019 UJ120.1372.4234.70927.4900.943522.4 Apollo
2013 JA36 0.1382.6675.19642.5060.948421.0 Apollo
2008 MG1 0.1390.7831.4285.7190.822819.9 Aten
2013 HK11 0.1392.1894.23917.7040.936420.7 Apollo
2017 SK10 0.1402.0563.97124.5160.931921.4 Apollo
3200 Phaethon 0.1401.2712.40322.2600.889814.3 Apollo Largest Mercury crosser. Has the smallest perihelion of any named asteroid. 6.25 ± 0.15 kilometers
2020 VL40.1412.1214.10256.9020.933718.5 Apollo
2013 YC 0.1422.4964.8512.8040.943021.4 Apollo
2010 JG87 0.1452.7675.38916.8400.947519.2 Apollo 0.408 ± 0.017 kilometers
2020 HE0.1462.5154.88320.4880.941823.7 Apollo
2015 DU180 0.1501.9273.7034.8520.921920.8 Apollo 0.435 ± 0.174 kilometers
2016 XK24 0.1540.5801.0058.0950.734720.4 Aten orbit very poorly known
482533 2012 UA34 0.1560.7861.41619.8000.801619.7 Aten
2016 NT22 0.1611.2462.33017.7830.870419.5 Apollo
155140 2005 UD 0.1631.2752.38728.6780.872217.3 Apollo Possibly a fragment of 3200 Phaethon [2]
2005 EL70 0.1632.4754.78616.7640.934224.0 Apollo
2019 LZ10.1642.3014.4379.6140.928619.8 Apollo
2017 HE4 0.1652.8935.62041.0700.942821.2 Apollo
364136 2006 CJ 0.1660.6771.18710.2320.754920.2 Aten
104150 2000 NL10 0.1670.9141.66132.5280.817015.8 Aten 1.946 ± 0.059 kilometers
2020 BE150.1681.6113.05316.5380.895520.1 Apollo
2019 NF60.1702.1924.21419.7490.922520.1 Apollo
2011 WN15 0.1731.2172.26133.4500.858019.7 Apollo
2019 GQ20.1742.5624.95039.0950.932118.9 Apollo
2013 WM 0.1752.0833.9924.1570.916223.9 Apollo
2020 KR40.1751.8343.49214.9320.904621.0 Apollo
302169 2001 TD45 0.1770.7971.41625.3910.777519.9 Aten
2005 RV24 0.1781.5062.83336.2590.881820.5 Apollo
527977 2008 EY68 0.1790.7451.31119.7940.759922.3 Apollo
141851 2002 PM6 0.1801.1982.21619.1720.850117.7 Apollo
2019 AN70.1801.1972.21423.8640.849421.6 Apollo
2013 AJ91 0.1812.5314.88233.2970.928619.3 Apollo
2015 VQ64 0.1811.1932.2068.5280.848221.5 Apollo
267223 2001 DQ8 0.1821.8423.50212.7790.900918.1 Apollo
2017 EP22 0.1831.9723.76014.7470.907022.4 Apollo
259221 2003 BA21 0.1841.1002.01723.7120.833219.1 Apollo
2011 YX62 0.1852.5254.8658.6180.926723.0 Apollo
2018 YC20.1862.6285.07016.4130.929222.7 Apollo
1566 Icarus 0.1871.0781.97022.8220.827016.9 Apollo First Mercury crosser discovered. ~1 kilometer
89958 2002 LY45 0.1871.6413.0969.9110.886317.0 Apollo
5786 Talos 0.1871.0811.97623.2280.826817.1 Apollo
2009 HU58 0.1882.0663.94535.8250.909219.1 Apollo
506491 2003 UW29 0.1891.1702.1503.7590.838520.6 Apollo
2019 LU10.1901.5272.8647.3510.875824.2 Apollo
2015 RD36 0.1902.5434.8960.4430.925122.5 Apollo
2020 KG60.1911.1302.06922.4400.830819.3 Apollo
2020 HD90.1952.2454.29519.5380.913319.5 Apollo
387505 1998 KN3 0.1951.5422.8882.2910.873318.4 Apollo 1.060 ± 0.020 kilometers
2007 MK6 0.1961.0811.96625.1390.818820.3 Apollo
2015 KJ122 0.1960.7851.3755.0670.750322.0 Aten
2015 DZ53 0.1961.5112.8258.3340.870220.8 Apollo
455426 2003 MT9 0.1972.5334.8696.8310.922218.6 Apollo 0.685 ± 0.269 kilometers
2010 VA12 0.1991.2692.34037.3990.843419.5 Apollo
153201 2000 WO107 0.2000.9121.6237.7700.780719.3 Aten 0.510 ± 0.083 kilometers
141079 2001 XS30 0.2001.1642.12928.5380.828217.7 Apollo
139289 2001 KR1 0.2001.2602.31923.2530.841117.6 Apollo 1.126 ± 0.239 kilometers
66391 Moshup 0.2000.6421.08538.8860.688416.6 Aten 1.317 ± 0.040 kilometers
2014 UV116 0.2010.9171.63342.3080.917123.6 Aten
1996 BT 0.2021.2022.20311.9920.832223.0 Apollo
2016 TE56 0.2032.0303.85724.4690.899920.1 Apollo
143637 2003 LP6 0.2031.7463.28943.5740.883616.4 Apollo
2020 RT70.2042.5594.91412.1230.920421.8 Apollo
2019 BH40.2042.4454.68620.9130.916621.1 Apollo
3299152005 MB0.2040.9851.76741.3840.792917.1 Aten 1.012 ± 0.139 kilometers
2005 EP10.2050.8931.58016.3260.770423.7 Aten
4381162005 NX440.2052.2144.22336.6390.907417.4 Apollo
2015 QN30.2052.4924.77819.9400.917619.5 Apollo
2013 RG740.2070.6931.1806.4740.701723.3 Aten
2017 DN1090.2071.1962.1847.0890.826821.8 Apollo
2015 OC220.2072.1494.09011.6320.903520.0 Apollo
2019 BE50.2080.6101.0121.4360.659125.1 Aten
2015 CG130.2092.5084.8087.1260.916624.1 Apollo
3692962009 SU190.2092.0813.95214.5280.899417.9 Apollo
2014 RE110.2090.7261.24329.5920.711722.7 Aten
2009 UX190.2101.2552.29915.9990.832418.9 Apollo
184990 2006 KE89 0.2121.0531.89545.1040.799116.4 Apollo 2.039 ± 0.148 kilometers
2008 JN0.2121.0771.94332.0280.803420.6 Apollo
2016 QU10.2122.2304.24723.3420.904919.2 Apollo 0.661 ± 0.171 kilometers
467372 2004 LG 0.2132.0643.91671.1540.896918.0 Apollo Highly inclined orbit. 0.874 ± 0.012 kilometers
3080432004 TH100.2141.2502.28714.2970.828718.6 Apollo
2018 JD20.2141.8233.43250.9850.882418.9 Apollo
2003 UC50.2151.1852.15636.7960.818520.1 Apollo
66253 1999 GT3 0.2161.3342.45219.5000.837718.4 Apollo
471926 Jormungandr 0.2181.4662.71323.5740.851018.6 Apollo
85953 1999 FK21 0.2190.7391.25812.6050.703118.1 Aten ~0.59 kilometers
2014 JS540.2202.0743.9393.3630.894121.2 Apollo
3699861998 SO0.2210.7321.24330.3420.698620.6 Aten
1414952002 EZ110.2211.1142.00851.9160.802118.3 Apollo
2010 PK90.2210.6821.14312.5940.675721.8 Aten 0.143 ± 0.008 kilometers
495829 1995 LG 0.2231.0651.90643.5810.790718.7 Apollo
494706 2005 GL9 0.2232.1424.06120.0230.895916.6 Apollo
2013 GV680.2241.7063.1875.9800.868418.9 Apollo
4378441999 MN0.2250.6741.1222.0220.665521.4 Aten
5386442016 FA40.2261.0921.95916.2050.793519.5 Apollo
2017 KP340.2261.3952.56530.0710.838219.5 Apollo
1527421998 XE120.2290.8781.52713.4350.739219.1 Aten 0.413 ± 0.005 kilometers
2012 BE1240.2292.5384.84716.3000.909619.6 Apollo
2017 CO320.2311.3852.53927.5920.833019.4 Apollo
489900 2008 KP 0.2321.1011.97059.8460.789618.9 Apollo
2002 EV110.2322.1003.96811.5980.889420.0 Apollo
2016 XC20.2332.2754.31727.4710.897723.6 Apollo
2019 WH60.2332.3414.44829.2870.900418.8 Apollo
2012 EQ30.2331.3142.3968.4340.822522.5 Apollo
3251022008 EY50.2340.6261.0195.1100.626720.1 Aten 0.361 ± 0.006 kilometers
2017 WP28 0.2341.1762.11710.0840.801020.8 Apollo
2015 FE370.2341.2702.30625.0390.815620.1 Apollo
2014 JO250.2342.0663.89725.1700.886617.8 Apollo
2013 DL10.2350.8391.44426.4730.720221.1 Aten
2014 QO3900.2351.6673.10024.6120.859121.1 Apollo
2020 RR10.2351.1862.13714.8820.801824.3 Apollo
2020 BT120.2362.2144.19130.1600.893419.1 Apollo
2007 KG70.2371.7793.3214.7370.866820.6 Apollo
137052 Tjelvar 0.2381.2482.25814.9120.809616.9 Apollo
2010 KB80.2381.3742.5111.8930.826924.0 Apollo
2015 DC2000.2381.7773.3163.0580.865920.5 Apollo
2001 VB0.2392.3954.5529.5300.900418.4 Apollo
2017 FM1020.2401.2902.34029.1350.814221.9 Apollo
2019 GC40.2412.5554.8682.1510.905724.6 Apollo
2251461999 YC0.2411.4222.60338.2250.830517.2 Apollo 1.651 ± 0.175 kilometers
4325092010 FF70.2421.4052.56816.1760.827919.5 Apollo
2012 KA40.2421.1001.9585.8060.780121.1 Apollo
2011 KU150.2421.9543.6664.4000.876121.8 Apollo
2020 LD0.2421.2152.1883.6770.800722.4 Apollo
2000 PN0.2431.0221.80022.8660.762322.6 Apollo
2006 BC0.2431.4062.57018.1010.827319.1 Apollo
2019 QU20.2430.8241.40411.3250.704822.2 Aten 0.237 ± 0.114 kilometers
2016 LV470.2441.8013.35915.2410.864820.0 Apollo
2011 EL470.2451.6313.01725.4270.850020.0 Apollo
4019982003 MO0.2451.9703.69521.4340.875818.4 Apollo
2010 EF440.2452.1874.12938.0230.888020.2 Apollo
2016 AF90.2452.5114.77722.6580.902422.2 Apollo
2020 DU10.2451.9463.64815.3580.873926.6 Apollo
2000 SG80.2462.4674.68924.1340.900517.5 Apollo
2475172002 QY60.2460.8171.38812.7550.699119.7 Aten 0.269 ± 0.005 kilometers
4570592008 EG0.2460.9431.64026.7850.739020.0 Aten
2019 AK110.2472.5214.79525.5880.902219.4 Apollo
2003 YH1360.2472.3504.45216.4040.894919.4 Apollo
2426432005 NZ60.2471.8333.4208.4180.865117.4 Apollo 1.989 ± 0.479 kilometers
2013 YK1480.2472.1444.04117.5650.884618.8 Apollo
2015 KJ1570.2480.9451.64236.8871.07319.2 Aten
2020 FD20.2483.0015.7550.2730.917325.7 Apollo
2018 PB220.2501.4402.63145.3360.826719.4 Apollo
2018 KK10.2500.6401.02913.9180.609023.5 Aten
2016 FV70.2502.0353.81910.1420.877023.1 Apollo
2011 EH170.2500.7311.2122.9850.657624.6 Aten
2018 WL10.2512.0763.90217.2480.873921.5 Apollo
2017 JT20.2511.1622.07342.7260.783818.8 Apollo
2006 LA0.2511.5572.86211.0570.838618.8 Apollo
2020 FB50.2511.6022.9533.0960.843124.8 Apollo
2002 AS40.2521.2672.28327.0390.801421.7 Apollo
2016 BY140.2532.7315.20813.1590.907423.9 Apollo
5095232007 XP30.2532.2454.23713.1570.887219.3 Apollo
2017 MA10.2532.5094.76515.0960.899121.7 Apollo
2006 BX1470.2530.7871.32111.5770.678021.5 Aten
2008 CG0.2541.3782.50320.8870.815920.2 Apollo
2009 WY70.2540.6501.0454.0010.608424.1 Aten
2014 LY210.2540.6461.0371.2430.605929.1 Aten
2016 WH80.2552.4404.62615.6210.895719.2 Apollo
2017 DC0.2552.1454.03515.7400.881323.0 Apollo
2014 FH0.2551.7373.21812.0080.853023.4 Apollo
2020 VC30.2551.1852.11417.2080.784423.3 Apollo
136874 1998 FH74 0.2562.2034.15021.1400.883915.6 Apollo 3.398 ± 0.129 kilometers
1I ʻOumuamua [ citation needed ]0.256N/AN/A122.7421.201122.1 Interstellar object Perihelion of 2018 Solar System approach.
40267 1999 GJ4 0.2571.3392.42134.4920.808315.5 Apollo 1.641 ± 0.053 kilometers
2014 EA490.2572.0113.76510.6330.872320.0 Apollo
2011 KY150.2580.6491.04016.8630.602824.1 Aten
2014 DE800.2581.4762.69326.6620.825219.0 Apollo
2017 JJ2 0.2580.6921.12512.1540.626425.1 Aten
2012 LT70.2591.0791.90042.2670.760419.0 Apollo
5308712011 WS20.2591.0091.76046.7830.743517.2 Apollo 1.434 ± 0.056 kilometers
2011 GS60 0.2593.3576.45519.2690.922919.0 Apollo Largest confirmed orbit of any mercury-crosser
2019 SZ60.2591.1932.12712.5590.782922.2 Apollo
2015 DO530.2602.5344.80829.0860.897620.8 Apollo
2010 RV30.2602.1514.0428.8020.879223.2 Apollo
2019 MQ20.2601.2422.2240.8570.790624.2 Apollo
2011 WR460.2602.2494.6774.8690.894620.0 Apollo
2017 SR17 0.2602.4984.73628.4390.895718.8 Apollo
2016 TA0.2602.3844.5087.2150.890826.3 Apollo
2008 UX0.2610.8171.37421.7410.681320.7 Aten
2014 SM2600.2612.2594.2567.7810.884221.0 Apollo
2014 GC490.2620.7351.2086.4280.644028.6 Aten
2013 JX28 0.2620.6010.94010.7620.564020.1 Atira Has the second-smallest semi-major axis of any known object in the Solar System, after Mercury.
2007 VL2430.2620.9651.66843.3340.728617.8 Aten
331471 1984 QY1 0.2642.4984.73214.2630.894515.6 Apollo Third largest Mercury crosser
2006 SO1980.2641.9273.5919.7660.863223.9 Apollo
2008 FP0.2642.5754.8863.3950.897626.3 Apollo
1907882001 RT170.2641.2682.27220.1090.792018.3 Apollo
2019 JA70.2651.6573.05017.1430.840322.5 Apollo
2018 MN80.2650.8481.43012.3760.687622.8 Aten
2006 OS90.2652.7445.22321.0610.903417.8 Apollo
2011 TX80.2650.9091.5545.9740.708421.9 Aten
2005 UR0.2662.2484.2306.9330.881721.6 Apollo
2018 GY40.2660.9181.57017.2370.701019.0 Aten
2018 QT10.2660.6591.0517.9020.595422.3 Aten
2016 FA150.2661.1712.07514.2770.772322.8 Apollo
2006 PF10.2672.1944.12214.0500.878519.5 Apollo
2013 CY320.2672.0313.79417.9220.868428.1 Apollo
2008 GD0.2671.1982.12821.7740.776719.8 Apollo
2019 PR0.2682.5284.78915.2250.894019.6 Apollo
2014 UQ1140.2691.1672.0668.6860.769722.4 Apollo
3694522010 LG140.2691.0451.82234.2180.742817.9 Apollo
2017 UO 0.2692.5544.8378.5800.894620.2 Apollo
1901192004 VA640.2702.4654.66129.9300.890617.1 Apollo 1.451 ± 0.698 kilometers
2019 LP50.2701.3782.48626.0650.804324.1 Apollo
482798 2013 QK48 0.2711.5862.90119.0130.829318.3 Apollo
2017 FU90 0.2710.7731.2752.3430.773125.2 Aten
2017 KQ340.2711.7843.29669.1030.847818.7 Apollo
2019 OC50.2723.3866.50152.1260.919818.2 Apollo
2012 TO1390.2722.4394.6065.3680.888619.7 Apollo
2015 YM100.2722.5124.75218.6960.891919.8 Apollo
2013 VA100.2731.1682.0641.0300.766422.2 Apollo
2008 CH1160.2730.6631.05220.3710.587519.2 Aten 0.322 ± 0.094 kilometers
1530022000 JG50.2731.3412.40831.4360.796018.2 Apollo
1898652003 NC0.2741.4062.53821.6120.805419.3 Apollo
2010 CC190.2741.0991.92546.1200.751122.3 Apollo 0.104 ± 0.005 kilometers
2020 PD70.2752.2344.19477.5610.877122.8 Apollo
3513702005 EY0.2752.5174.75917.2320.890917.1 Apollo
2020 KK0.2760.8881.50120.6940.689724.6 Aten
2016 CL1360.2760.7301.18421.5190.622221.4 Aten 0.123 ± 0.056 kilometers
4178742007 NC50.2762.4444.61319.3200.887218.1 Apollo
5268982007 HR0.2761.0671.85811.9760.741520.6 Apollo
2009 CT50.2761.9833.69010.0140.860818.8 Apollo
2014 JN20.2760.8941.5116.3120.691124.3 Apollo
66063 1998 RO1 0.2770.9911.70522.6820.720118.1 Aten Has a moon.
2008 GJ1100.2781.5592.84013.5620.821820.5 Apollo
2026832006 US2160.2790.6370.9953.4320.562419.8 Aten
164201 2004 EC 0.2791.9973.71434.5870.860015.7 Apollo
2011 FZ220.2802.3664.4517.9400.881623.1 Apollo
2013 ND15 0.2810.7241.1664.8000.611924.1 Aten First Venus trojan discovered.
2018 VR90.2811.1892.09812.4360.763822.7 Apollo
4675402006JF420.2810.6721.0635.9510.581719.2 Apollo
2019 QK40.2822.5464.81020.4050.889220.7 Apollo
4363252010 GR70.2831.8313.38024.1420.845618.4 Apollo 0.452 ± 0.014 kilometers
2015 BQ40.2832.5654.84736.2730.889619.1 Apollo
2011 YL630.2831.8483.41319.0580.846720.9 Apollo
2014 JW540.2832.4284.57322.1130.883318.6 Apollo
3854022002 WZ20.2842.4624.64051.3300.884617.0 Apollo 1.597 ± 0.117 kilometers
2003 UY120.2840.7011.11816.4060.594522.9 Aten
2005 WS30.2850.6721.05823.0690.575521.2 Aten
2008 CC60.2851.2612.2389.1390.773922.0 Apollo
4129771990 UO0.2851.2572.22931.5560.772919.5 Apollo
253106 2002 UR3 0.2861.3792.47248.6060.792816.6 Apollo
2018 WL20.2860.8841.48234.9360.676721.9 Aten
397237 2006 KZ112 0.2862.5244.76237.7730.886816.7 Apollo 1.180 ± 0.028 kilometers
2018 DA40.2861.3472.40822.0730.787820.5 Apollo
3824061996 AJ10.2861.3102.3332.5360.781520.5 Apollo
2019 AZ20.2872.4594.6317.3350.883321.6 Apollo
2016 LW90.2871.1301.93411.1940.746122.0 Apollo
2017 XR 0.2870.9491.6121.4020.697623.8 Aten
2018 NY140.2871.2612.23525.1760.772220.2 Apollo
2010 XB110.2880.6180.94829.8870.533919.9 Atira
2015 KR1570.2881.0871.88518.0160.734621.6 Apollo
3648772008 EM90.2891.9583.6289.4380.852417.3 Apollo 0.786 ± 0.026 kilometers
2020 TP70.2891.1482.00718.1700.747919.9 Apollo
2018 AW 0.2902.5584.82611.8740.886819.5 Apollo
2015 TX240.2902.2664.2426.0430.872121.5 Apollo 0.252 ± 0.043 kilometers
2018 ND0.2902.0683.84626.9770.859720.5 Apollo
2008 BP160.2900.8291.36729.1780.649721.7 Aten
5386482016 FS60.2901.2992.30837.1790.776519.4 Apollo
2011 EC410.2912.4264.5629.8850.880119.9 Apollo
5297182010 KY1290.2922.4904.68860.7740.882717.0 Apollo 1.770 ± 0.287 kilometers
2013 AO270.2922.4114.5314.4100.878819.9 Apollo
3338891998 SV40.2920.8161.34153.2960.642018.2 Aten 0.919 ± 0.269 kilometers
2009 WP60.2921.1311.9692.7770.741526.8 Apollo
2016 EL560.2922.0283.76411.3550.855621.1 Apollo
2004 WK10.2931.0841.87634.4700.730121.0 Apollo
2017 JK20.2932.0243.75516.7990.855119.9 Apollo
4526392005 UY60.2932.2574.22112.1590.870018.2 Apollo 2.249 ± 1.084 kilometers
2015 BY5120.2940.8781.46323.3110.665721.4 Aten
4523021995 YR10.2941.6983.1023.5700.827120.4 Apollo
2012 DK310.2940.6941.09411.1720.576621.8 Aten
2015 TB1450.2942.1013.90738.6900.860020.0 Apollo
4625502009 CB30.2941.0651.83521.5100.723619.4 Apollo
2019 FJ0.2950.7621.22944.4350.612919.1 Aten
999071989 VA0.2950.7281.16228.7980.594717.9 Apollo diameter ~1.4 kilometers
2009 HU440.2960.8301.3656.6360.644022.6 Aten
2017 MM8 0.2960.8871.47823.2790.666722.7 Aten
2319372001 FO320.2961.7013.10738.9740.826117.7 Apollo
2014 HE1240.2961.9603.62318.7360.848722.0 Apollo
2016 SG20.2972.4734.65024.9040.880020.6 Apollo 0.278 ± 0.088 kilometers
1705022003 WM70.2972.4774.65710.4070.880117.2 Apollo
2014 GC340.2971.0431.78813.7750.715023.1 Apollo
1622691999 VO60.2971.1351.97340.1110.738017.0 Apollo 1.010 ± 0.180 kilometers
4343262004 JG60.2980.6350.97218.9430.531118.4 Atira
2005 TF500.2982.2734.24810.6970.868720.3 Apollo
2007 PR250.2981.9623.6263.4960.847922.0 Apollo
1620041991 VE0.2990.8911.4827.2190.664718.2 Aten
2007 TL230.2991.1341.9702.1220.736521.4 Apollo
1415252002 FV50.2991.0871.87534.0310.724618.0 Apollo
4037752011 HS40.3000.9381.5765.4630.680121.0 Aten
1388932000 YH660.3011.1732.04518.3450.743618.1 Apollo
2020 UM50.3010.6831.0669.2180.559526.0 Apollo
2005 XW40.3011.0381.77618.2540.710121.4 Apollo
3911512005 YY930.3012.5804.85924.1790.883217.1 Apollo 1.745 ± 0.061 kilometers
2019 EM10.3010.6711.04028.4550.550822.3 Apollo
2013 BM760.3011.5642.82717.7000.807320.2 Apollo
2013 YK700.3010.9481.59423.1240.682020.9 Aten
2019 QK0.3021.2082.11538.2480.750420.9 Apollo
2012 XS930.3021.1391.97721.8660.735019.8 Apollo
2020 QU50.3020.7221.1420.7670.581925.6 Aten
2009 UT190.3020.8901.4789.6410.660522.5 Aten
2014 LJ21 0.3032.8905.47724.2520.895216.1 Apollo Largest unnumbered Mercury crosser
2002 PD110.3032.2244.14512.1510.863820.1 Apollo
2016 GX2210.3032.4964.6886.9120.878621.6 Apollo
2005 NX390.3032.4584.61314.1510.876719.7 Apollo
163423 2002 FB3 0.3030.7621.22020.2780.601716.5 Aten 1.682 ± 0.013 kilometers
277142 2005 LG8 0.3031.7553.20726.5580.827216.7 Apollo
2014 HT1840.3031.4292.55419.3310.787621.9 Apollo
2010 CT0.3040.8881.47219.7590.657720.1 Aten
2006 KZ860.3042.1974.08914.2940.861617.9 Apollo
2015 PM3070.3042.1854.0658.0380.860721.7 Apollo
5187372009 OO90.3041.6242.94313.5960.812618.8 Apollo
2011 UX1920.3051.4892.67355.6300.795318.5 Apollo
137925 2000 BJ19 0.3051.2922.27931.1130.763815.9 Apollo 1.372 ± 0.068 kilometers
2003 FY60.3050.7301.1556.6060.582022.4 Aten
2010 XX580.3052.2384.17222.1800.863618.4 Apollo
3881882006 DP140.3061.3662.42611.7770.776218.9 Apollo
2019 BG30.3071.5212.7359.4150.798526.1 Apollo
87684 2000 SY2 0.3070.8591.41119.2260.642716.1 Aten
2017 GQ50.3071.2492.19037.7000.754120.4 Apollo
2010 KC0.3070.7821.2572.2100.607124.1 Aten
2013 LC70.3071.5062.70540.1890.795919.4 Apollo

Mercury grazers

All Mercury grazers have semi-major axes larger than Mercury's (0.3871 AU), and hence are outer grazers, i.e. have perihelia within Mercury's aphelion (0.4667 AU) but not within its perihelion (0.3075 AU). As of February 2016, there are 561 Mercury grazers known. [3] (Values have been rounded to three decimals.)

Designation
number
Name Perihelion
(AU)
Semi-major axis
(AU)
Aphelion
(AU)
Inclination
(°)
Eccentricity Absolute magnitude (H) Orbit
class
Notes
16960 1998 QS52 0.3132.2034.09317.5600.857714.3 Apollo
85989 1999 JD6 0.3240.8831.44117.0540.632817.1 Aten
68348 2001 LO7 0.3392.1523.96425.4780.842614.2 Apollo
86667 2000 FO10 0.3480.8591.37014.2860.594817.4 Aten
2212 Hephaistos 0.3582.1673.97511.7410.834813.87 Apollo
66400 1999 LT7 0.3660.8551.3459.0650.572519.3 Aten
37655 Illapa 0.3661.4782.59017.9940.752417.9 Apollo
88213 2001 AF2 0.3860.9541.52217.8120.595219.7 Aten
2008 UU1 0.4011.6082.81412.0570.750617.6 Apollo
66146 1998 TU3 0.4060.7871.1685.4130.483914.5 Aten
24443 2000 OG 0.4112.3104.21025.8220.822316.3 Apollo
5143 Heracles 0.4181.8343.2509.0330.772113.8 Apollo
33342 1998 WT24 0.4180.7181.0197.3430.418017.9 Aten
5660 1974 MA 0.4241.7863.14738.0520.762315.4 Apollo
322756 2001 CK32 0.4480.7251.00038.1320.38219.2 Aten Temporary horseshoe librator of Venus
524522 2002 VE68 0.4270.7241.0219.0060.410420.5 Aten Temporary quasi-satellite of Venus
2012 XE133 0.4100.7231.0366.7110.43323.4 Aten Temporary horseshoe librator of Venus
88254 2001 FM129 0.4381.1821.9261.5240.629617.6 Apollo
2101 Adonis 0.4421.8753.3071.3330.764118.8 Apollo
3838 Epona 0.4481.5052.56129.2390.702015.5 Apollo
87309 2000 QP 0.4550.8471.24034.7430.463117.6 Aten
2340 Hathor 0.4640.8441.2245.8560.449820.1 Aten

See also

Related Research Articles

Centaur (small Solar System body) Type of solar system object

In planetary astronomy, a centaur is a small Solar System body with either a perihelion or a semi-major axis between those of the outer planets. Centaurs generally have unstable orbits because they cross or have crossed the orbits of one or more of the giant planets; almost all their orbits have dynamic lifetimes of only a few million years, but there is one known centaur, 514107 Kaʻepaokaʻawela, which may be in a stable orbit. Centaurs typically exhibit the characteristics of both asteroids and comets. They are named after the mythological centaurs that were a mixture of horse and human. Observational bias toward large objects makes determination of the total centaur population difficult. Estimates for the number of centaurs in the Solar System more than 1 km in diameter range from as low as 44,000 to more than 10,000,000.

Aten asteroid Group of near-Earth asteroids

The Aten asteroids are a dynamical group of asteroids whose orbits bring them into proximity with Earth. By definition, Atens are Earth-crossing asteroids (a < 1.0 AU and Q > 0.983 AU). The group is named after 2062 Aten, the first of its kind, discovered on 7 January 1976 by American astronomer Eleanor Helin at Palomar Observatory. As of 2020, 1841 Atens have been discovered, of which 13 are named. Many Atens are classified as potentially hazardous asteroids.

Amor asteroid Group of near-Earth asteroids

The Amor asteroids are a group of near-Earth asteroids named after the archetype object 1221 Amor. The orbital perihelion of these objects is close to, but greater than, the orbital aphelion of Earth, with most Amors crossing the orbit of Mars. The Amor asteroid 433 Eros was the first asteroid to be orbited and landed upon by a robotic space probe.

Atira asteroid Group of near-Earth asteroids

Atira asteroids or Apohele asteroids, also known as interior-Earth objects (IEOs), are asteroids whose orbits are entirely confined within Earth's orbit; that is, their orbit has an aphelion smaller than Earth's perihelion, which is 0.983 astronomical units (AU). Atira asteroids are by far the smallest group of near-Earth objects, compared to the Aten, Apollo and Amor asteroids.

(99907) 1989 VA is a very eccentric, stony asteroid and near-Earth object, approximately 1 kilometer in diameter. It was discovered on 2 November 1989, by American astronomer couple Carolyn and Eugene Shoemaker and Canadian astronomer David Levy at the Palomar Observatory on Mount Palomar, California.

<span class="nowrap">2004 XR<sub>190</sub></span> Minor planet in the scattered disc

2004 XR190, nicknamed Buffy, is a trans-Neptunian object, classified as both a scattered disc object and a detached object, located in the outermost region of the Solar System. It was first observed on 11 December 2004, by astronomers with the Canada–France Ecliptic Plane Survey at the Mauna Kea Observatories, Hawaii, United States. It is the largest known highly inclined (> 45°) object. With a perihelion of 51 AU, it belongs to a small and poorly understood group of very distant objects with moderate eccentricities.

474640 Alicanto, provisionally designated 2004 VN112, is a detached extreme trans-Neptunian object. It was discovered on 6 November 2004, by American astronomer Andrew C. Becker at Cerro Tololo Inter-American Observatory in Chile. It never gets closer than 47 AU from the Sun (near the outer edge of the main Kuiper belt) and averages more than 300 AU from the Sun. Its large eccentricity strongly suggests that it was gravitationally scattered onto its current orbit. Because it is, like all detached objects, outside the current gravitational influence of Neptune, how it came to have this orbit cannot yet be explained. It was named after Alicanto, a nocturnal bird in Chilean mythology.

Minor planet Astronomical object in direct orbit around the Sun that is neither a planet or a comet

A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor exclusively classified as a comet. Before 2006, the International Astronomical Union (IAU) officially used the term minor planet, but during that year's meeting it reclassified minor planets and comets into dwarf planets and small Solar System bodies (SSSBs).

Detached object Dynamical class of minor planets

Detached objects are a dynamical class of minor planets in the outer reaches of the Solar System and belong to the broader family of trans-Neptunian objects (TNOs). These objects have orbits whose points of closest approach to the Sun (perihelion) are sufficiently distant from the gravitational influence of Neptune that they are only moderately affected by Neptune and the other known planets: This makes them appear to be "detached" from the rest of the Solar System, except for their attraction to the Sun.

(459883) 2014 JX55 is an asteroid from the central regions of the asteroid belt. After its first observations as 2007 EB26 in 2007, it was considered an inner heliospheric asteroid and near-Earth object with one of the closest perihelion ever observed of any body orbiting the Sun, until further observations invalidated the conclusions from early observations. The object measures approximately 2.8 kilometers (1.7 miles) in diameter.

<span class="nowrap">2005 HC<sub>4</sub></span>

2005 HC4 is the asteroid with the smallest known perihelion of any known object orbiting the Sun (except sungrazing comets). Its extreme orbital eccentricity brings it to within 0.071 AU of the Sun (23% of Mercury's perihelion) and takes it as far as 3.562 AU from the Sun (well beyond the orbit of Mars). Due to its very small perihelion and comparably large aphelion, 2005 HC4 achieves the fastest speed of any known asteroid bound to the Solar System with a velocity of 157 km/s (565,000 km/h; 351,000 mi/h) at perihelion (there are comets, however, which obtain much higher speeds).

<span class="nowrap">2012 VP<sub>113</sub></span> Trans-Neptunian object

2012 VP113, also known by its nickname "Biden", is a trans-Neptunian object of the sednoid population, located in the outermost reaches of the Solar System. It was first observed on 5 November 2012 by American astronomers Scott Sheppard and Chad Trujillo at the Cerro Tololo Inter-American Observatory in Chile. The discovery was announced on 26 March 2014. The object probably measures somewhere between 300 and 1000 km in diameter, possibly large enough to be a dwarf planet.

Sednoid Trans-Neptunian object with a perihelion beyond the Kuiper Belt

A sednoid is a trans-Neptunian object with a perihelion well beyond the Kuiper cliff at 47.8 AU. Only three objects are known from this population: 90377 Sedna, 2012 VP113, and 541132 Leleākūhonua (2015 TG387), but it is suspected that there are many more. All three have perihelia greater than 64 AU. These objects lie outside an apparently nearly empty gap in the Solar System and have no significant interaction with the planets. They are usually grouped with the detached objects. Some astronomers, such as Scott Sheppard, consider the sednoids to be inner Oort cloud objects (OCOs), though the inner Oort cloud, or Hills cloud, was originally predicted to lie beyond 2,000 AU, beyond the aphelia of the three known sednoids.

594913 ꞌAylóꞌchaxnim First known asteroid of the Vatira population

594913 ꞌAylóꞌchaxnim (provisional designation 2020 AV2) is a large near-Earth asteroid discovered by the Zwicky Transient Facility on 4 January 2020. It is the first asteroid discovered to have an orbit completely within Venus's orbit, and is thus the first and only known member of the provisionally named Vatira population of Atira-class asteroids. ꞌAylóꞌchaxnim has the smallest known aphelion and third-smallest known semi-major axis among all asteroids. With an absolute magnitude approximately 16.2, the asteroid is expected to be larger than 1 km in diameter.

2014 ST373 (prov. designation:2014 ST373) is a trans-Neptunian object and a detached object from the outermost region of the Solar System. With a perihelion of 50.2 AU, it belongs to the top 10 minor planets with the highest known perihelia of our Solar System. and is neither a scattered disc nor an extreme trans-Neptunian object. It measures approximately 370 kilometers (230 miles) in diameter and was first observed on 25 September 2014, by astronomers using the Dark Energy Camera (DECam) at Cerro Tololo Inter-American Observatory in Chile.

2019 BE5 is a sub-kilometer near-Earth asteroid classified under the Aten group. It was discovered on 31 January 2019, by the Zwicky Transient Facility at the Palomar Observatory. The asteroid was discovered one day after it had made a close approach to Earth from a distance of 0.00784 AU (1.173 million km; 3.05 LD).

<span class="nowrap">2021 PH<sub>27</sub></span> Near-Earth asteroid of the Atira group

2021 PH27 is a near-Earth asteroid of the Atira group. It was discovered by Scott Sheppard using the Dark Energy Survey's DECam imager at NOIRLab's Cerro Tololo Inter-American Observatory on 13 August 2021. 2021 PH27 has the smallest semi-major axis and shortest orbital period among all known asteroids as of 2021, with a velocity at perihelion of 106 km/s (240,000 mph). It also has the largest value of the relativistic perihelion shift, 1.6 times that of Mercury. With an absolute magnitude of 17.7, the asteroid is expected to be larger than 1 kilometer (0.6 miles) in diameter.

2021 SG

2021 SG is a near-Earth asteroid, with an estimated diameter of 42 to 94 meters, that passed about half a lunar distance from Earth on 16 September 2021. It approached from the direction of the Sun, so it was invisible until a day later. It completes its highly eccentric orbit in 2.24 years. 2021 SG is an Apollo asteroid with a 1.71 AU semimajor axis, and a 0.473 AU perihelion out to a 2.95 AU aphelion. With an absolute magnitude (H) of 24.0, it is possibly the largest asteroid to pass within 1 lunar distance of Earth during 2021.

References

  1. 1 2 3 4 5 6 7 8 List of asteroids with q<0.3075 AU generated by the JPL Small-Body Database Search Engine Retrieved 2012-05-30
  2. "Exploring Links Between Nearby Asteroids". 23 June 2020. Retrieved 2020-06-30.
  3. List of asteroids with 0.3075 AU<q<0.4667 AU generated by the JPL Small-Body Database Search Engine Retrieved 2012-05-30