Astronomy:(155140) 2005 UD

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(155140) 2005 UD
Discovery[1][2]
Discovered byCatalina Sky Srvy.
Discovery siteCatalina Stn.
Discovery date22 October 2005
Designations
2005 UD
Minor planet categoryNEO · Apollo[3]
Orbital characteristics[3]
Epoch 1 July 2020 (JD 2459396.5)
Uncertainty parameter 0
Observation arc38.76 yr (14,157 days)
Earliest precovery date11 November 1982[4]
|{{{apsis}}}|helion}}2.387 AU
|{{{apsis}}}|helion}}0.1629 AU
1.275 AU
Eccentricity0.8722
Orbital period1.44 yr (525.8 days)
Mean anomaly1.976°
Mean motion0° 41m 5.026s / day
Inclination28.660°
Longitude of ascending node19.714°
207.603°
Earth MOID0.07759 AU (11,607,000 km)
Mercury MOID0.09496 AU (14,206,000 km)
Venus MOID0.07997 AU (11,963,000 km)
Mars MOID0.04058 AU (6,071,000 km)[1]
Physical characteristics
Mean diameter1.28±0.02 km[5]
Rotation period5.23400+0.00004
−0.00001 h[5]
Pole ecliptic latitude−25.8°+5.3°
−12.5°[5]
Pole ecliptic longitude285.8°+1.1°
−5.3°[5]
Geometric albedo0.14±0.02[5]
C[6]
Apparent magnitude17.0 (discovery)[2]
Absolute magnitude (H)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]

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 astronomical unit|AU (8.35 million km) from Mars on 20 July 2024.[3]

Potential Family Members[14]
Object Size Earth
MOID
(AU) 		Perihelion
(AU) 		Mars
MOID
(AU)
3200 Phaethon 6 km 0.02 astronomical unit|AU (3.0 million km) 0.14 AU (21 million km) 0.14 AU (21 million km)
(155140) 2005 UD[3] 1.3 km 0.08 AU (12 million km) 0.16 AU (24 million km) 0.04 AU (6.0 million km)[1]
(225416) 1999 YC[15] 1.7 km 0.25 AU (37 million km) 0.24 AU (36 million km) 0.10 AU (15 million km)

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 "(155140) = 2005 UD". Minor Planet Center. International Astronomical Union. http://www.minorplanetcenter.net/db_search/show_object?object_id=155140. Retrieved 5 September 2021. 
  2. ↑ 2.0 2.1 "MPEC 2005-U22 : 2005 UD". Minor Planet Electronic Circular. Minor Planet Center. 23 October 2005. https://minorplanetcenter.net/mpec/K05/K05U22.html. Retrieved 5 September 2021. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "JPL Small-Body Database Browser: 155140 (2005 UD)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2005UD&view=OPC. Retrieved 5 September 2021. 
  4. ↑ "MPEC 2005-X10 : 2005 UD". Minor Planet Electronic Circular. Minor Planet Center. 2 December 2005. https://minorplanetcenter.net/mpec/K05/K05X10.html. Retrieved 5 September 2021. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 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. doi:10.1016/j.pss.2020.105120. Bibcode: 2021P&SS..19505120H. 
  6. ↑ Kinoshita, D.Expression error: Unrecognized word "etal". (May 2007). "Surface heterogeneity of 2005 UD from photometric observations". Astronomy & Astrophysics 466 (3): 1153–1158. doi:10.1051/0004-6361:20066276. Bibcode: 2007A&A...466.1153K. https://www.aanda.org/articles/aa/pdf/2007/18/aa6276-06.pdf. 
  7. ↑ 7.0 7.1 Devogèle, MaximeExpression error: Unrecognized word "etal". (June 2020). "New Evidence for a Physical Link between Asteroids (155140) 2005 UD and (3200) Phaethon". The Planetary Science Journal 1 (1): 15. doi:10.3847/PSJ/ab8e45. Bibcode: 2020PSJ.....1...15D. 
  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?". Astronomy & Astrophysics 450 (3): L25–L28. doi:10.1051/0004-6361:200600022. Bibcode: 2006A&A...450L..25O. https://www.aanda.org/articles/aa/pdf/2006/18/aahl142.pdf. 
  9. ↑ Jewitt, David; Hsieh, Henry (October 2006). "Physical Observations of 2005 UD: A Mini-Phaethon". The Astronomical Journal 132 (4): 1624–1629. doi:10.1086/507483. Bibcode: 2006AJ....132.1624J. 
  10. ↑ Hanuš, J.Expression error: Unrecognized word "etal". (December 2018). "(3200) Phaethon: Bulk density from Yarkovsky drift detection". Astronomy & Astrophysics 620: L8. doi:10.1051/0004-6361/201834228. Bibcode: 2018A&A...620L...8H. https://www.aanda.org/articles/aa/pdf/2018/12/aa34228-18.pdf. 
  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. doi:10.1093/mnras/stz658. Bibcode: 2019MNRAS.485.3378R. 
  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. doi:10.1016/j.icarus.2021.114535. Bibcode: 2021Icar..36614535M. 
  13. ↑ 13.0 13.1 13.2 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. doi:10.3847/PSJ/ac1bad. Bibcode: 2021PSJ.....2..190K. 
  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. doi:10.3847/psj/acd538. ISSN 2632-3338. 
  15. ↑ "JPL Small-Body Database Browser: 225416 (1999 YC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=1999YC&view=OPC. 

External links



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