1980 Tezcatlipoca

1980 Tezcatlipoca

Light curve-based 3D-model of 1980 Tezcatlipoca
Discovery [1]
Discovered by A. G. Wilson
A.A.E. Wallenquist
Discovery site Palomar Obs.
Discovery date 19 June 1950
Designations
MPC designation 1980 Tezcatlipoca
Named after
 Tezcatlipoca[2]
1950 LA
Amor · NEO
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 65.58 yr (23,954 days)     
Aphelion 2.3332 AU
Perihelion 1.0857 AU
1.7094 AU
Eccentricity 0.3648
2.24 yr (816 days)
64.114°
Inclination 26.859°
246.61°
115.39°
Earth MOID 0.2447 AU
Physical characteristics
Dimensions 4.3 km[1]
6.66 km[3]
4.50±0.04 km[4]
5.998 km[5]
6.012±0.083 km[6]
6.00 km (taken)[7]
7.24612±0.00005 h[8]
7.2505±0.0008 h[9]
7.25225 h[10]
7.251±0.002 h[11]
7.25226±0.00005 h[12]
0.25[1]
0.145[3]
0.47±0.43[13]
0.247±0.005[4]
0.1279[5]
0.132±0.028[6]
B–V = 0.955
U–B = 0.455
SU (Tholen)[1]
Sl (SMASS)[1]
S [7]
13.92[1]

    1980 Tezcatlipoca, provisional designation 1950 LA, is a stony near-Earth object and Amor asteroid about 5 kilometers in diameter. It was discovered on June 19, 1950 by American astronomer Albert George Wilson and Swedish astronomer Åke Wallenquist at Palomar Observatory in San Diego County, California.[14]

    The eccentric asteroid orbits the Sun at a distance of 1.1–2.3 AU once every 2 years and 3 months (816 days). Based on several photometric light-curve observations, it has a well-defined, concurring rotation period of 7.25 hours.[8][11][12] The relatively bright, stony S-type asteroid, with a astronomical albedo between 0.13 and 0.47, is classified as SU and Sl in the Tholen and SMASS taxonomy system, respectively. Its Earth minimum orbit intersection distance is slightly less than 0.25 AU.[1]

    The asteroid was named after Tezcatlipoca, the Aztech deity of matter, whose name translates to "Smoking Mirror" in the Nahuatl language. His animal counterpart was the jaguar and his contender was Quetzálcoatl, after which the minor planet 1915 Quetzálcoatl is named. Both deities were depicted as twin serpents that coil round each other to produce time.[2]

    References

    1. 1 2 3 4 5 6 7 8 "JPL Small-Body Database Browser: 1980 Tezcatlipoca (1950 LA)" (2016-01-18 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1980) Tezcatlipoca. Springer Berlin Heidelberg. p. 160. ISBN 978-3-540-00238-3. Retrieved January 2016.
    3. 1 2 Harris, Alan W.; Davies, John K. (December 1999). "Physical Characteristics of Near-Earth Asteroids from Thermal Infrared Spectrophotometry". Icarus 142 (2): 464–475. Bibcode:1999Icar..142..464H. doi:10.1006/icar.1999.6248. Retrieved December 2015.
    4. 1 2 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved December 2015.
    5. 1 2 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 December 2015.
    6. 1 2 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved December 2015.
    7. 1 2 "LCDB Data for (1980) Tezcatlipoca". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
    8. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1980) Tezcatlipoca". Geneva Observatory. Retrieved January 2016.
    9. ↑ 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 December 2015.
    10. ↑ Kaasalainen, Mikko; Pravec, Petr; Krugly, Yurij N.; Sarounová, Lenka; Torppa, Johanna; Virtanen, Jenni; et al. (January 2004). "Photometry and models of eight near-Earth asteroids". Icarus 167 (1): 178–196. Bibcode:2004Icar..167..178K. doi:10.1016/j.icarus.2003.09.012. Retrieved December 2015.
    11. 1 2 Warner, Brian D. (October 2015). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2015 March-June". The Minor Planet Bulletin 42 (4): 256–266. Bibcode:2015MPBu...42..256W. ISSN 1052-8091. Retrieved December 2015.
    12. 1 2 Hanus, J.; Delbo', M.; Durech, J.; Alí-Lagoa, V. (August 2015). "Thermophysical modeling of asteroids from WISE thermal infrared data - Significance of the shape model and the pole orientation uncertainties". Icarus 256: 101–116. arXiv:1504.04199. Bibcode:2015Icar..256..101H. doi:10.1016/j.icarus.2015.04.014. Retrieved December 2015.
    13. ↑ 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 December 2015.
    14. ↑ "1980 Tezcatlipoca (1950 LA)". Minor Planet Center. Retrieved January 2016.

    External links

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