1943 Anteros

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1943 Anteros
Discovery [1]
Discovered by J. B. Gibson
Discovery site El Leoncito Complex
Discovery date 13 March 1973
Designations
MPC designation (1943) Anteros
Named after
Anteros (Greek mythology)[2]
1973 EC
Amor · NEO[1][3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 43.74 yr (15,976 days)
Aphelion 1.7968 AU
Perihelion 1.0643 AU
1.4305 AU
Eccentricity 0.2560
1.71 yr (625 days)
216.95°
Inclination 8.7059°
246.33°
338.36°
Earth MOID 0.0625 AU (24.3 LD)
Physical characteristics
Dimensions 2.01 km (derived)[4]
2.38±0.72 km[5]
2.39 km[6]
2.43 km[7]
2.735±0.003 h[8]
2.867±0.001 h[9]
2.8695 h[10]
2.9±0.1 h[11]
3 h[12]
6.5209±0.0022 h[13]
0.138±0.107[5]
0.15[7]
0.17[14]
0.18 (assumed)[4]
B–V = 0.841[1]
U–B = 0.444[1]
S (Tholen)[1]
L (SMASS)[1]
Sq [15] · S[16][17] · L[4]
15.00[17] · 15.449±0.002 (R)[13] · 15.75[1] · 15.8[7] · 15.82±0.14[18] · 15.89±0.14[19] · 15.9±0.2[5] · 15.96[10] · 16.01[20] · 16.35±0.48[16]

1943 Anteros, provisional designation 1973 EC, is a spheroidal, rare-type asteroid and near-Earth object, approximately 2 kilometers in diameter. It was discovered on 13 March 1973, by American astronomer James Gibson at the Leoncito Astronomical Complex in Argentina.[3]

Anteros is a member of the Amor group of asteroids, which approach the orbit of Earth from beyond but do not cross it. It orbits the Sun at a distance of 1.1–1.8 AU once every 1 years and 9 months (625 days). Its orbit has an eccentricity of 0.26 and an inclination of 9° with respect to the ecliptic.[1] Anteros has an Earth minimum orbit intersection distance of 0.0625 AU (9,350,000 km) or 24.3 lunar distances, which is slightly above the defined limit of 0.05 AU for potentially hazardous objects.[1] The body's observation arc begins 3 days prior to its official discovery observation in 1973, as a 1968-precovery from Palomar remained unused.[3]

In the SMASS taxonomy, Anteros is a relatively rare L-type asteroid described as a reddish, but otherwise featureless stony asteroid.[1] It is also classified as a Sq subtype asteroid.[15]

Several rotational light-curves of Anteros were obtained from photometric observations by Brian D. Warner, Petr Pravec, the Palomar Transient Factory and others since the 1980s.[4] One of the best-rated and most recent light-curves was obtained at the U.S. Palmer Divide Station in December 2013, and gave a rotation period of 2.867 hours with a brightness variation of 0.1 magnitude, which indicates that Anteros has a nearly spheroidal shape (U=3).[9]

According to the EXPLORENEOs survey carried out by the Spitzer Space Telescope, Anteros measures between 2.38 and 2.43 kilometers in diameter, and its surface has an albedo of 0.138 to 0.170.[5][6][7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.18, and derives a diameter of 2.0 kilometers based on an absolute magnitude of 15.89.[4]

The asteroid was named after the Greek god Anteros, avenger of unrequited love and punisher of those who scorn love and the advances of others. The asteroid's name may have been chosen because its orbit is similar to the asteroid 433 Eros, and in Greek mythology, Anteros was said to be the twin brother of Eros.[2] Naming citation was published before November 1977 (M.P.C. 4237).[21]

References[edit]

  1. ^ a b c d e f g h i j k "JPL Small-Body Database Browser: 1943 Anteros (1973 EC)" (2016-12-05 last obs.). Jet Propulsion Laboratory. Retrieved 9 December 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1943) Anteros. Springer Berlin Heidelberg. p. 156. ISBN 978-3-540-00238-3. Retrieved 9 December 2016. 
  3. ^ a b c "1943 Anteros (1973 EC)". Minor Planet Center. Retrieved 9 December 2016. 
  4. ^ a b c d e "LCDB Data for (1943) Anteros". Asteroid Lightcurve Database (LCDB). Retrieved 9 December 2016. 
  5. ^ a b c d Mueller, Michael; Delbo', M.; Hora, J. L.; Trilling, D. E.; Bhattacharya, B.; Bottke, W. F.; et al. (April 2011). "ExploreNEOs. III. Physical Characterization of 65 Potential Spacecraft Target Asteroids". The Astronomical Journal. 141 (4): 9. Bibcode:2011AJ....141..109M. doi:10.1088/0004-6256/141/4/109. Retrieved 9 December 2016. 
  6. ^ a b Harris, A. W.; Mommert, M.; Hora, J. L.; Mueller, M.; Trilling, D. E.; Bhattacharya, B.; et al. (March 2011). "ExploreNEOs. II. The Accuracy of the Warm Spitzer Near-Earth Object Survey". The Astronomical Journal. 141 (3): 10. Bibcode:2011AJ....141...75H. doi:10.1088/0004-6256/141/3/75. Retrieved 9 December 2016. 
  7. ^ a b c d Trilling, D. E.; Mueller, M.; Hora, J. L.; Harris, A. W.; Bhattacharya, B.; Bottke, W. F.; et al. (September 2010). "ExploreNEOs. I. Description and First Results from the Warm Spitzer Near-Earth Object Survey". The Astronomical Journal. 140 (3): 770–784. Bibcode:2010AJ....140..770T. doi:10.1088/0004-6256/140/3/770. Retrieved 9 December 2016. 
  8. ^ Warner, Brian D. (January 2015). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 June-October". The Minor Planet Bulletin. 42 (1): 41–53. Bibcode:2015MPBu...42...41W. ISSN 1052-8091. Retrieved 9 December 2016. 
  9. ^ a b Warner, Brian D. (July 2014). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". The Minor Planet Bulletin. 41 (3): 157–168. Bibcode:2014MPBu...41..157W. ISSN 1052-8091. Retrieved 9 December 2016. 
  10. ^ a b Pravec, Petr; Wolf, Marek; Sarounová, Lenka (November 1998). "Lightcurves of 26 Near-Earth Asteroids". Icarus. 136 (1): 124–153. Bibcode:1998Icar..136..124P. doi:10.1006/icar.1998.5993. Retrieved 9 December 2016. 
  11. ^ Koehn, Bruce W.; Bowell, Edward G.; Skiff, Brian A.; Sanborn, Jason J.; McLelland, Kyle P.; Pravec, Petr; et al. (October 2014). "Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2009 January through 2009 June". The Minor Planet Bulletin. 41 (4): 286–300. Bibcode:2014MPBu...41..286K. ISSN 1052-8091. Retrieved 9 December 2016. 
  12. ^ Weidenschilling, S. J.; Chapman, C. R.; Davis, D. R.; Greenberg, R.; Levy, D. H. (August 1990). "Photometric geodesy of main-belt asteroids. III - Additional lightcurves". Icarus: 402–447. Bibcode:1990Icar...86..402W. doi:10.1016/0019-1035(90)90227-Z. ISSN 0019-1035. Retrieved 9 December 2016. 
  13. ^ a b Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 9 December 2016. 
  14. ^ Thomas, C. A.; Trilling, D. E.; Emery, J. P.; Mueller, M.; Hora, J. L.; Benner, L. A. M.; et al. (September 2011). "ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population". The Astronomical Journal. 142 (3): 12. Bibcode:2011AJ....142...85T. doi:10.1088/0004-6256/142/3/85. Retrieved 7 November 2015. 
  15. ^ a b Thomas, Cristina A.; Emery, Joshua P.; Trilling, David E.; Delbó, Marco; Hora, Joseph L.; Mueller, Michael (January 2014). "Physical characterization of Warm Spitzer-observed near-Earth objects". Icarus. 228: 217–246. arXiv:1310.2000Freely accessible. Bibcode:2014Icar..228..217T. doi:10.1016/j.icarus.2013.10.004. Retrieved 9 December 2016. 
  16. ^ a b Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 9 December 2016. 
  17. ^ a b Carry, B.; Solano, E.; Eggl, S.; DeMeo, F. E. (April 2016). "Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry". Icarus. 268: 340–354. Bibcode:2016Icar..268..340C. doi:10.1016/j.icarus.2015.12.047. Retrieved 9 December 2016. 
  18. ^ Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 9 December 2016. 
  19. ^ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 9 December 2016. 
  20. ^ Pravec, P.; Wolf, M.; Sarounová, L.; Mottola, S.; Erickson, A.; Hahn, G.; et al. (December 1997). "The Near-Earth Objects Follow-Up Program". Icarus. 130 (2): 275–286. Bibcode:1997Icar..130..275P. doi:10.1006/icar.1997.5816. Retrieved 9 December 2016. 
  21. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 December 2016. 

External links[edit]