(137108) 1999 AN10

Last updated

(137108) 1999 AN10
Discovery
Discovered by LINEAR
Discovery date13 January 1999
Designations
(137108) 1999 AN10
Orbital characteristics [1]
Epoch 13 September 2023
(JD  2453300.5)
Uncertainty parameter 0
Observation arc 66.97 yr
Earliest precovery date26 January 1955
Aphelion 2.28  AU (341 million  km)
Perihelion 0.638 AU (95.4 million km)
1.46 AU (218 million km)
Eccentricity 0.56224
1.76  yr (643.37  d)
313.20°
0° 33m 34.236s / day (n)
Inclination 39.929°
314.35°
5 December 2023
268.33°
Earth  MOID 0.00015 AU (22,000 km)
Physical characteristics
Dimensions 800–1800 m [2] [3]
Mass ~2.9×1012  kg [4]
Equatorial escape velocity
~2.8 km/h [4]
5.041 h [1]
18.1 [1]

    (137108) 1999 AN10 is a kilometer-length near-Earth asteroid and potentially hazardous asteroid of the Apollo group. It was discovered by LINEAR on 13 January 1999. [5]

    Contents

    On 7 August 2027, this asteroid will pass at about 0.00261  AU (390,000  km ; 243,000  mi ; 1.02  LD ) of the Earth's center. [6] [1] [7] [8] During the close approach, it is expected to peak at about apparent magnitude 7.3, [9] and will be visible in binoculars.

    1999 AN10 has a well-determined orbit with an observation arc of 65 years. [1] It was found by Andreas Doppler and Arno Gnädig in precovery images from 1955. [1] When astronomers had an observation arc of the object of 123 days, computations gave a 1 in 10 million chance it would return on an impact trajectory in 2039. [10]

    On 7 August 1946, the asteroid passed 0.00625  AU (935,000  km ; 581,000  mi ) from Earth and then 0.00404 AU (604,000 km; 376,000 mi) from the Moon. [1]

    1999 AN10
    Position uncertainty and increasing divergence [1]
    Date JPL SBDB
    nominal geocentric
    distance (AU)    		uncertainty
    region
    (3-sigma)
    1946-08-070.006250 AU (935.0 thousand km)±900 km
    2027-08-070.002606 AU (389.9 thousand km)±160 km
    2076-02-040.027021 AU (4.0423 million km)±154 thousand km
    2198-02-010.063727 AU (9.5334 million km)±800 thousand km
    2027 Moon/Earth approach [1]
    Date & TimeApproach
    to    		 Nominal distance
    2027-Aug-07 06:48Moon763391 km
    2027-Aug-07 07:11Earth389866 km
    Animation of 1999 AN10's orbit - Close approach in 2027 .mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{} Sun * Earth * 1999 AN10 Animation of 1999 AN10 orbit.gif
    Animation of 1999 AN10's orbit – Close approach in 2027
       Sun ·   Earth ·   1999 AN10

    See also

    History of close approaches of large near-Earth objects since 1908 (A)
    PHA DateApproach distance (lunar dist.) Abs.
    mag
    ( H )    		Diameter (C)
    (m)    		Ref (D)
    Nomi-
    nal(B)    		Mini-
    mum    		Maxi-
    mum
    (33342) 1998 WT24 1908-12-163.5423.5373.54717.9556–1795 data
    (458732) 2011 MD5 1918-09-170.9110.9090.91317.9556–1795 data
    (7482) 1994 PC1 1933-01-172.9272.9272.92816.8749–1357 data
    69230 Hermes 1937-10-301.9261.9261.92717.5668–2158 data
    69230 Hermes1942-04-261.6511.6511.65117.5668–2158 data
    (137108) 1999 AN10 1946-08-072.4322.4292.43517.9556–1795 data
    (33342) 1998 WT24 1956-12-163.5233.5233.52317.9556–1795 data
    (163243) 2002 FB3 1961-04-124.9034.9004.90616.41669–1695 data
    (192642) 1999 RD32 1969-08-273.6273.6253.63016.31161–3750 data
    (143651) 2003 QO104 1981-05-182.7612.7602.76116.01333–4306 data
    2017 CH1 1992-06-054.6913.3916.03717.9556–1795 data
    (170086) 2002 XR14 1995-06-244.2594.2594.26018.0531–1714 data
    (33342) 1998 WT24 2001-12-164.8594.8594.85917.9556–1795 data
    4179 Toutatis 2004-09-294.0314.0314.03115.32440–2450 data
    (671294)2014 JO25 2017-04-194.5734.5734.57317.8582–1879 data
    (137108) 1999 AN10 2027-08-071.0141.0101.01917.9556–1795 data
    (35396) 1997 XF11 2028-10-262.4172.4172.41816.9881–2845 data
    (154276) 2002 SY50 2071-10-303.4153.4123.41817.6714–1406 data
    (164121) 2003 YT1 2073-04-294.4094.4094.40916.21167–2267 data
    (385343) 2002 LV 2076-08-044.1844.1834.18516.61011–3266 data
    (52768) 1998 OR2 2079-04-164.6114.6114.61215.81462–4721 data
    (33342) 1998 WT24 2099-12-184.9194.9194.91917.9556–1795 data
    (85182) 1991 AQ 2130-01-274.1404.1394.14117.11100 data
    314082 Dryope 2186-07-163.7092.9964.78617.5668–2158 data
    (137126) 1999 CF9 2192-08-214.9704.9674.97318.0531–1714 data
    (290772) 2005 VC 2198-05-051.9511.7912.13417.6638–2061 data
    (A) List includes near-Earth approaches of less than 5 lunar distances (LD) of objects with H brighter than 18.
    (B) Nominal geocentric distance from the Earth's center to the object's center (Earth radius≈0.017 LD).
    (C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y.
    (D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD)
    (E) Color codes:   unobserved at close approach  observed during close approach  upcoming approaches

    References

    1. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 137108 (1999 AN10)" . Retrieved 20 September 2023.
    2. ↑ "137108 1999 AN10". The Near-Earth Asteroids Data Base at E.A.R.N. Archived from the original on 24 February 2012. Retrieved 31 January 2008.
    3. ↑ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 20 April 2018.
    4. 1 2 assume radius of 0.650 km; volume of a sphere * assume density of 2.6g/cm3 (though it could be a loose rubble pile) yields a mass of 2.99×1012 kg and an escape velocity of 2.82 km/h.
    5. ↑ Hannu, Karttunen; Vilppu, Piirola (1999). Astrophysics with the NOT: Proceedings of the conference held in Turku on August 12–15, 1998. University of Turku. p. 270. ISBN   951-29-1615-0.
    6. ↑ Piero Sicoli; Francesco Manca. "Sormano Astronomical Observatory: Table of Next Closest Approaches to the Earth by Asteroids". Astronomical Observatory of Brera. Archived from the original on 1 December 2007. Retrieved 31 January 2008.
    7. ↑ "NEODys (137108) 1999AN10". Department of Mathematics, University of Pisa, ITALY. Archived from the original on 6 December 2014. Retrieved 31 January 2008.
    8. ↑ "MPEC 1999-N21: 1999 AN10". IAU: Minor Planet Center. 12 July 1999. Retrieved 31 January 2008.
    9. ↑ "1999AN10 Ephemerides for 7 Aug 2027". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 16 October 2011.
    10. ↑ Paul W. Chodas (18 May 1999). "The Continuing Story Of Asteroid 1999 AN10". Archived from the original on 26 October 2010. Retrieved 22 October 2010.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.