(155140) 2005 UD

Last updated
(155140) 2005 UD
Discovery [1] [2]
Discovered by Catalina Sky Srvy.
Discovery site Catalina Stn.
Discovery date22 October 2005
Designations
2005 UD
NEO  · Apollo [3]
Orbital characteristics [3]
Epoch 1 July 2020 (JD 2459396.5)
Uncertainty parameter 0
Observation arc 38.76 yr (14,157 days)
Earliest precovery date11 November 1982 [4]
Aphelion 2.387 AU
Perihelion 0.1629 AU
1.275 AU
Eccentricity 0.8722
1.44 yr (525.8 days)
1.976°
0° 41m 5.026s / day
Inclination 28.660°
19.714°
207.603°
Earth  MOID 0.07759 AU (11,607,000 km)
Mercury  MOID 0.09496 AU (14,206,000 km)
Venus  MOID 0.07997 AU (11,963,000 km)
Mars  MOID 0.04058 AU (6,071,000 km) [1]
Physical characteristics
1.28±0.02 km [5]
5.23400+0.00004
−0.00001  h [5]
−25.8°+5.3°
−12.5° [5]
285.8°+1.1°
−5.3° [5]
0.14±0.02 [5]
C [6]
17.0 (discovery) [2]
17.22±0.03 [5]
17.51±0.02 [7]
17.42 [3] [1]

    (155140) 2005 UD (provisional designation 2005 UD) is an asteroid on an eccentric orbit, classified as a near-Earth object of the Apollo group. It was discovered on 22 October 2005, by the Catalina Sky Survey at the Catalina Station in Arizona, United States. 2005 UD is thought to be a possible fragment of 3200 Phaethon due to its similar orbit, [8] [9] although it is not dynamically associated with the Geminid meteor stream produced by Phaethon. [10] [11]

    Contents

    Due to 2005 UD's highly eccentric orbit, it experiences extreme temperature variations up to 975 K (702 °C; 1,295 °F) at perihelion, leading to thermal fracturing of its surface regolith and ejection of dust particles. [12] However, no activity from 2005 UD has been observed as of yet, though it has been suspected that it could be the inactive parent body of the Daytime Sextantids meteor shower. [7] [13] 2005 UD and Phaethon share a bluish surface color at visible wavelengths, but differ at near-infrared wavelengths where 2005 UD appears redder than Phaethon. [13]

    2005 UD will pass 0.0558  AU (8.35 million  km ) from Mars on 20 July 2024. [3]

    Potential Family Members [14]
    ObjectSizeEarth
    MOID
    (AU)    		 Perihelion
    (AU)    		 Mars
    MOID
    (AU)
    3200 Phaethon 6 km0.02  AU (3.0 million  km )0.14 AU (21 million km)0.14 AU (21 million km)
    (155140) 2005 UD [3] 1.3 km0.08 AU (12 million km)0.16 AU (24 million km)0.04 AU (6.0 million km) [1]
    (225416) 1999 YC [15] 1.7 km0.25 AU (37 million km)0.24 AU (36 million km)0.10 AU (15 million km)

    See also

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    References

    1. 1 2 3 4 "(155140) = 2005 UD". Minor Planet Center. International Astronomical Union. Retrieved 5 September 2021.
    2. 1 2 "MPEC 2005-U22 : 2005 UD". Minor Planet Electronic Circular. Minor Planet Center. 23 October 2005. Retrieved 5 September 2021.
    3. 1 2 3 4 5 "JPL Small-Body Database Browser: 155140 (2005 UD)" (2022-10-31 last obs.). Jet Propulsion Laboratory . Retrieved 5 September 2021.
    4. ↑ "MPEC 2005-X10 : 2005 UD". Minor Planet Electronic Circular. Minor Planet Center. 2 December 2005. Retrieved 5 September 2021.
    5. 1 2 3 4 5 6 Huang, J.-N.; Muinonen, K.; Chen, T.; Wang, X.-B. (June 2020). "Photometric study for near-Earth asteroid (155140) 2005 UD". Planetary and Space Science. 195: 105120. arXiv: 2008.11442 . Bibcode:2021P&SS..19505120H. doi:10.1016/j.pss.2020.105120. S2CID   221319706.
    6. ↑ Kinoshita, D.; Ohtsuka, K.; Sekiguchi, T.; Watanabe, J.; Ito, H.; Arakida, T.; et al. (May 2007). "Surface heterogeneity of 2005 UD from photometric observations" (PDF). Astronomy & Astrophysics. 466 (3): 1153–1158. Bibcode:2007A&A...466.1153K. doi: 10.1051/0004-6361:20066276 . S2CID   55255286.
    7. 1 2 Devogèle, Maxime; MacLennan, Eric; Gustafsson, Annika; Moskovitz, Nicholas; Chatelain, Joey; Borisov, Galin; et al. (June 2020). "New Evidence for a Physical Link between Asteroids (155140) 2005 UD and (3200) Phaethon". The Planetary Science Journal. 1 (1): 15. Bibcode:2020PSJ.....1...15D. doi: 10.3847/PSJ/ab8e45 . S2CID   219521769.
    8. ↑ Ohtsuka, K.; Sekiguchi, T.; Kinoshita, D.; Watanabe, J.-I.; Ito, T.; Arakida, H.; Kasuga, T. (May 2006). "Apollo asteroid 2005 UD: split nucleus of (3200) Phaethon?" (PDF). Astronomy & Astrophysics. 450 (3): L25 –L28. Bibcode:2006A&A...450L..25O. doi: 10.1051/0004-6361:200600022 . S2CID   120802314.
    9. ↑ Jewitt, David; Hsieh, Henry (October 2006). "Physical Observations of 2005 UD: A Mini-Phaethon". The Astronomical Journal. 132 (4): 1624–1629. Bibcode:2006AJ....132.1624J. doi:10.1086/507483. S2CID   121479835.
    10. ↑ Hanuš, J.; Vokrouhlický, D.; Delbo', M.; Farnocchia, D.; Polishook, D.; Pravec, P.; et al. (December 2018). "(3200) Phaethon: Bulk density from Yarkovsky drift detection" (PDF). Astronomy & Astrophysics. 620: L8. arXiv: 1811.10953 . Bibcode:2018A&A...620L...8H. doi: 10.1051/0004-6361/201834228 . S2CID   119378304.
    11. ↑ Ryabova, G. O.; Avdyushev, V. A.; Williams, I. P. (May 2019). "Asteroid (3200) Phaethon and the Geminid meteoroid stream complex". Monthly Notices of the Royal Astronomical Society. 485 (3): 3378–3385. Bibcode:2019MNRAS.485.3378R. doi: 10.1093/mnras/stz658 . S2CID   126849510.
    12. ↑ MacLennan, Eric; Toliou, Athanasia; Granvik, Mikael (September 2020). "Dynamical evolution and thermal history of asteroids (3200) Phaethon and (155140) 2005 UD". Icarus. 366: 114535. arXiv: 2010.10633 . Bibcode:2021Icar..36614535M. doi:10.1016/j.icarus.2021.114535. S2CID   224814434.
    13. 1 2 3 Kareta, Theodore; Reddy, Vishnu; Pearson, Neil; Sanchez, Juan A.; Harris, Walter M. (September 2021). "Investigating the Relationship between (3200) Phaethon and (155140) 2005 UD through Telescopic and Laboratory Studies". The Planetary Science Journal. 2 (5): 190. arXiv: 2109.01020 . Bibcode:2021PSJ.....2..190K. doi: 10.3847/PSJ/ac1bad .
    14. ↑ Cukier, W. Z.; Szalay, J. R. (June 1, 2023). "Formation, Structure, and Detectability of the Geminids Meteoroid Stream". The Planetary Science Journal. 4 (6): 109. arXiv: 2306.11151 . Bibcode:2023PSJ.....4..109C. doi: 10.3847/psj/acd538 . ISSN   2632-3338.
    15. ↑ "JPL Small-Body Database Browser: 225416 (1999 YC)". Jet Propulsion Laboratory.
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