1980 Tezcatlipoca
{{Use dmy dates|date=September 2020}}
{{Infobox planet
| minorplanet = yes
| name = 1980 Tezcatlipoca
| background = #FFC2E0
| image = 1980Tezcatlipoca (Lightcurve Inversion).png
| image_scale =
| caption = {{longitem|Lightcurve-based 3D-model of Tezcatlipoca|style=padding: 5px 0; line-height: 1.3em;}}
| discovered = 19 June 1950
| discoverer = A. G. Wilson
A.A.E. Wallenquist
| discovery_site = Palomar Obs.
| mpc_name = (1980) Tezcatlipoca
| alt_names = 1950 LA
| pronounced = {{IPAc-en|ˌ|t|ɛ|z|k|æ|t|l|i|ˈ|p|oʊ|k|ə}}
| named_after = Tezcatlipoca
{{small|(Aztec creator god)}}
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 66.96 yr (24,458 days)
| aphelion = 2.3331 AU
| perihelion = 1.0858 AU
| semimajor = 1.7094 AU
| eccentricity = 0.3648
| period = 2.24 yr (816 days)
| mean_anomaly = 328.60°
| mean_motion = {{Deg2DMS|0.4410|sup=ms}} / day
| inclination = 26.869°
| asc_node = 246.57°
| arg_peri = 115.49°
| moid = 0.2455 AU{{·}}95.6 LD
| dimensions = 4.3 km {{small|(Gehrels)}}
{{val|4.36|0.10}}
{{val|4.50|0.04}} km
{{val|5.998|}} km
6.00 km {{small|(taken)}}
{{val|6.012|0.083}} km
{{val|6.66}} km
| rotation = {{val|7.24612|0.00005}} h
{{val|7.2505|0.0008}} h
{{val|7.251|0.002}} h
{{val|7.25225|}} h
{{nowrap|{{val|7.25226|0.00005}} h}}
| albedo = {{val|0.1279}}
{{val|0.132|0.028}}
{{val|0.145}}
{{val|0.247|0.005}}
0.25 {{small|(Gehrels)}}
{{val|0.26|0.03}}
{{val|0.47|0.43}}
| spectral_type = SU {{small|(Tholen)}}
Sl {{small|(SMASS)}}
Sw {{small|(ExploreNEOs)}}
S {{small|(LCDB)}}
B–V = 0.955
U–B = 0.455
| abs_magnitude = 13.6{{·}}13.87{{·}}13.92{{·}}{{val|13.96|0.1}}{{·}}{{val|14.30|1.07}}
}}
1980 Tezcatlipoca, provisional designation {{mp|1950 LA}}, is an eccentric, stony asteroid and near-Earth object of the Amor group, approximately {{convert|6|km|0|sp=us}} in diameter.
It was discovered on 19 June 1950, by American astronomer Albert Wilson and Swedish astronomer Åke Wallenquist at the U.S. Palomar Observatory in California. It was named after the Aztec deity Tezcatlipoca.
Orbit and classification
Tezcatlipoca orbits the Sun in the inner main-belt at a distance of 1.1–2.3 AU once every 2 years and 3 months (816 days). Its orbit has an eccentricity of 0.36 and an inclination of 27° with respect to the ecliptic.
This near-Earth object has an Earth minimum orbit intersection distance of {{convert |0.2455 |AU |km |abbr=on |lk=off |sigfig=3}}, which corresponds to 95.6 lunar distances. The body's observation arc begins with its official discovery observation at Palomar.
Physical characteristics
The S-type asteroid is classified as a Sw-type by the ExploreNEOs project, and as a SU and Sl-type on the Tholen and SMASS taxonomic scheme, respectively.
Between 1988 and 2015, five rotational lightcurves of Tezcatlipoca were obtained from photometric observations and gave a well-defined, concurring rotation period of 7.25 hours with a brightness variation between 0.22 and 1.01 in magnitude, indicative of a non-spheroidal shape ({{small|U=3/n.a./2+/3-/n.a.}}).
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tezcatlipoca measures between 4.36 and 6.012 kilometers in diameter and its surface has an albedo between 0.128 and 0.26. The Collaborative Asteroid Lightcurve Link agrees with the revised NEOWISE observations, that is, an albedo of 0.128 and a diameter of 6.0 kilometers with an absolute magnitude of 13.96.
Naming
This minor planet was named after Tezcatlipoca, the Aztec 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 are Aztec creator gods and were depicted as twin serpents that coil round each other to produce time. The official {{MoMP|1980|naming citation}} was published by the Minor Planet Center on 15 October 1977 ({{small|M.P.C. 4237}}).
References
{{Reflist|refs=
|type = 2017-06-05 last obs.
|title = JPL Small-Body Database Browser: 1980 Tezcatlipoca (1950 LA)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001980
|publisher = Jet Propulsion Laboratory
|accessdate = 10 June 2017}}
|title = Dictionary of Minor Planet Names – (1980) Tezcatlipoca
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 160
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1981 |chapter = (1980) Tezcatlipoca }}
|title = 1980 Tezcatlipoca (1950 LA)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1980
|accessdate = 30 August 2016}}
|title = Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008)
|chapter = Appendix – Publication Dates of the MPCs
|last = Schmadel |first=Lutz D.
|year = 2009
|publisher = Springer Berlin Heidelberg
|page = 221
|isbn = 978-3-642-01964-7
|doi = 10.1007/978-3-642-01965-4|bibcode = 2009dmpn.book.....S
}}
|title = Asteroids and comets rotation curves – (1980) Tezcatlipoca
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page4cou.html#001980
|accessdate = 30 August 2016}}
|title = LCDB Data for (1980) Tezcatlipoca
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1980%7CTezcatlipoca
|accessdate = 30 August 2016}}
|first1 = Alan W. |last1 = Harris
|first2 = John K. |last2 = Davies
|date = December 1999
|title = Physical Characteristics of Near-Earth Asteroids from Thermal Infrared Spectrophotometry
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1999Icar..142..464H
|journal = Icarus
|volume = 142
|issue = 2
|pages = 464–475
|bibcode = 1999Icar..142..464H
|doi = 10.1006/icar.1999.6248
|access-date= 30 August 2016}}
|display-authors = 6
|first1 = Fumihiko |last1 = Usui
|first2 = Daisuke |last2 = Kuroda
|first3 = Thomas G. |last3 = Müller
|first4 = Sunao |last4 = Hasegawa
|first5 = Masateru |last5 = Ishiguro
|first6 = Takafumi |last6 = Ootsubo
|first7 = Daisuke |last7 = Ishihara
|first8 = Hirokazu |last8 = Kataza
|first9 = Satoshi |last9 = Takita
|first10 = Shinki |last10 = Oyabu
|first11 = Munetaka |last11 = Ueno
|first12 = Hideo |last12 = Matsuhara
|first13 = Takashi |last13 = Onaka
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=1980 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
|first1 = Petr |last1 = Pravec
|first2 = Alan W. |last2 = Harris
|first3 = Peter |last3 = Kusnirák
|first4 = Adrián |last4 = Galád
|first5 = Kamil |last5 = Hornoch
|date = September 2012
|title = Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P
|journal = Icarus
|volume = 221
|issue = 1
|pages = 365–387
|bibcode = 2012Icar..221..365P
|doi = 10.1016/j.icarus.2012.07.026
|access-date= 30 August 2016}}
|display-authors = 6
|first1 = A. |last1 = Mainzer
|first2 = T. |last2 = Grav
|first3 = J. |last3 = Masiero
|first4 = E. |last4 = Hand
|first5 = J. |last5 = Bauer
|first6 = D. |last6 = Tholen
|first7 = R. S. |last7 = McMillan
|first8 = T. |last8 = Spahr
|first9 = R. M. |last9 = Cutri
|first10 = E. |last10 = Wright
|first11 = J. |last11 = Watkins
|first12 = W. |last12 = Mo
|first13 = C. |last13 = Maleszewski
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407|s2cid = 35447010 }}
|first1 = W. Z. |last1 = Wisniewski
|first2 = T. M. |last2 = Michalowski
|first3 = A. W. |last3 = Harris
|first4 = R. S. |last4 = McMillan
|date = March 1995
|title = Photoelectric Observations of 125 Asteroids
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W
|journal = Abstracts of the Lunar and Planetary Science Conference
|volume = 26
|pages = 1511
|bibcode = 1995LPI....26.1511W
|access-date= 30 August 2016}}
|display-authors = 6
|first1 = Mikko |last1 = Kaasalainen
|first2 = Petr |last2 = Pravec
|first3 = Yurij N. |last3 = Krugly
|first4 = Lenka |last4 = Sarounová
|first5 = Johanna |last5 = Torppa
|first6 = Jenni |last6 = Virtanen
|first7 = Sanna |last7 = Kaasalainen
|first8 = Anders |last8 = Erikson
|first9 = Andreas |last9 = Nathues
|first10 = Josef |last10 = Durech
|first11 = Marek |last11 = Wolf
|first12 = Johan S. V. |last12 = Lagerros
|first13 = Mats |last13 = Lindgren
|first14 = Claes-Ingvar |last14 = Lagerkvist
|first15 = Robert |last15 = Koff
|first16 = John |last16 = Davies
|first17 = Rita |last17 = Mann
|first18 = Peter |last18 = Kusnirák
|first19 = Ninel M. |last19 = Gaftonyuk
|first20 = Vasilij G. |last20 = Shevchenko
|first21 = Vasilij G. |last21 = Chiorny
|first22 = Irina N. |last22 = Belskaya
|date = January 2004
|title = Photometry and models of eight near-Earth asteroids
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004Icar..167..178K
|journal = Icarus
|volume = 167
|issue = 1
|pages = 178–196
|bibcode = 2004Icar..167..178K
|doi = 10.1016/j.icarus.2003.09.012
|access-date= 30 August 2016}}
|author = Warner, Brian D.
|date = October 2015
|title = Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2015 March–June
|journal = The Minor Planet Bulletin
|volume = 42
|issue = 4
|pages = 256–266
|pmid = 32455361
|pmc = 7244091
|issn = 1052-8091
|bibcode = 2015MPBu...42..256W
}}
|first1 = J. |last1 = Hanus
|first2 = M. |last2 = Delbo'
|first3 = J. |last3 = Durech
|first4 = V. |last4 = Alí-Lagoa
|date = August 2015
|title = Thermophysical modeling of asteroids from WISE thermal infrared data – Significance of the shape model and the pole orientation uncertainties
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..256..101H
|journal = Icarus
|volume = 256
|pages = 101–116
|bibcode = 2015Icar..256..101H
|doi = 10.1016/j.icarus.2015.04.014
|arxiv = 1504.04199
|s2cid = 118480799
|access-date= 30 August 2016}}
|display-authors = 6
|author = Thomas, C. A.
|author2 = Trilling, D. E.
|author3 = Emery, J. P.
|author4 = Mueller, M.
|author5 = Hora, J. L.
|author6 = Benner, L. A. M.
|author7 = Bhattacharya, B.
|author8 = Bottke, W. F.
|author9 = Chesley, S.
|author10 = Delbó, M.
|author11 = Fazio, G.
|author12 = Harris, A. W.
|author13 = Mainzer, A.
|author14 = Mommert, M.
|author15 = Morbidelli, A.
|author16 = Penprase, B.
|author17 = Smith, H. A.
|author18 = Spahr, T. B.
|author19 = Stansberry, J. A.
|date = September 2011
|title = ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population
|journal = The Astronomical Journal
|volume = 142
|issue = 3
|page = 12
|bibcode = 2011AJ....142...85T
|doi = 10.1088/0004-6256/142/3/85
|doi-access = free
}}
|display-authors = 6
|first1 = Peter |last1 = Veres
|first2 = Robert |last2 = Jedicke
|first3 = Alan |last3 = Fitzsimmons
|first4 = Larry |last4 = Denneau
|first5 = Mikael |last5 = Granvik
|first6 = Bryce |last6 = Bolin
|first7 = Serge |last7 = Chastel
|first8 = Richard J. |last8 = Wainscoat
|first9 = William S. |last9 = Burgett
|first10 = Kenneth C. |last10 = Chambers
|first11 = Heather |last11 = Flewelling
|first12 = Nick |last12 = Kaiser
|first13 = Eugen A. |last13 = Magnier
|first14 = Jeff S. |last14 = Morgan
|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
|first17 = Christopher |last17 = Waters
|date = November 2015
|title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 – Preliminary results
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V
|journal = Icarus
|volume = 261
|pages = 34–47
|bibcode = 2015Icar..261...34V
|doi = 10.1016/j.icarus.2015.08.007
|arxiv = 1506.00762
|s2cid = 53493339 |access-date= 30 August 2016}}
|first1 = Cristina A. |last1 = Thomas
|first2 = Joshua P. |last2 = Emery
|first3 = David E. |last3 = Trilling
|first4 = Marco |last4 = Delbó
|first5 = Joseph L. |last5 = Hora
|first6 = Michael |last6 = Mueller
|date = January 2014
|title = Physical characterization of Warm Spitzer-observed near-Earth objects
|journal = Icarus
|volume = 228
|pages = 217–246
|bibcode = 2014Icar..228..217T
|doi = 10.1016/j.icarus.2013.10.004
|arxiv = 1310.2000|s2cid = 119278697
}}
|display-authors = 6
|first1 = C. R. |last1 = Nugent
|first2 = A. |last2 = Mainzer
|first3 = J. |last3 = Bauer
|first4 = R. M. |last4 = Cutri
|first5 = E. A. |last5 = Kramer
|first6 = T. |last6 = Grav
|first7 = J. |last7 = Masiero
|first8 = S. |last8 = Sonnett
|first9 = E. L. |last9 = Wright
|date = September 2016
|title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos
|journal = The Astronomical Journal
|volume = 152
|issue = 3
|page = 12
|bibcode = 2016AJ....152...63N
|doi = 10.3847/0004-6256/152/3/63
|arxiv = 1606.08923
|doi-access = free }}
}}
External links
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
- [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
- {{NeoDys|1980}}
- {{ESA-SSA|1980|Tezcatlipoca}}
- {{JPL small body}}
{{Minor planets navigator |1979 Sakharov |number=1980 |1981 Midas}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Tezcatlipoca}}
Category:Discoveries by Albert George Wilson