2797 Teucer
Discovery [1] | |
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Discovered by | E. Bowell |
Discovery site | Anderson Mesa Stn. |
Discovery date | 4 June 1981 |
Designations | |
MPC designation | (2797) Teucer |
Pronunciation | /ˈtjuːsər/ · TEW-sər |
Named after | Teucer (Greek mythology)[1] |
1981 LK · 1940 YG 1975 VA1 · 1975 XQ2 1978 EQ | |
Jupiter trojan [1][2][3] Greek [4][5] · background [5] | |
Orbital characteristics [2] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 77.40 yr (28,272 d) |
Aphelion | 5.5519 AU |
Perihelion | 4.6574 AU |
5.1046 AU | |
Eccentricity | 0.0876 |
11.53 yr (4,213 d) | |
173.90° | |
0° 5m 7.8s / day | |
Inclination | 22.391° |
69.934° | |
49.042° | |
Jupiter MOID | 0.0174 AU |
TJupiter | 2.8440 |
Physical characteristics | |
Dimensions | km × 114 km 114.0(occ.)[6] |
Mean diameter |
±0.75 km 89.43[7] ±4.1 km 111.14[8] ±2.78 km 113.99[9] |
±0.001 h 10.145[10][lower-alpha 1] | |
±0.003 0.059[9] ±0.005 0.0624[8] ±0.007 0.073[7] | |
D (Pan-STARRS)[3][11] D (SDSS-MOC)[6][12] V–I = ±0.045 0.920[3] | |
8.40[8][9] 8.7[1][2][7] | |
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2797 Teucer (/ˈtjuːsər/ TEW-sər), provisional designation 1981 LK, is a large Jupiter trojan from the Greek camp, approximately 110 kilometers (68 miles) in diameter. It was discovered on 4 June 1981, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, in the United States.[1] The dark D-type asteroid belongs to the 20 largest Jupiter trojans and has a rotation period of 10.15 hours.[3] It was named after the Greek hero and great archer, Teucer.[1]
Orbit and classification
Teucer is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of the Gas Giant's orbit in a 1:1 resonance . It is also a non-family asteroid in the Jovian background population.[5]
It orbits the Sun at a distance of 4.7–5.6 AU once every 11 years and 6 months (4,213 days; semi-major axis of 5.1 AU). Its orbit has an eccentricity of 0.09 and an inclination of 22° with respect to the ecliptic.[2]
The body's observation arc begins with its first observation as 1940 YG at Turku Observatory in December 1940, more than 40 years prior to its official discovery observation at Anderson Mesa.[1]
Naming
This minor planet was named after the Greek hero Teucer, from Greek mythology. The son of King Telamon was a great archer and half-brother of Ajax, with whom he fought alongside in the Trojan War.[1] The official naming citation was published by the Minor Planet Center on 17 February 1984 (M.P.C. 8543).[13]
Physical characteristics
Teucer has been characterized as a dark D-type asteroid by Pan-STARRS' survey as well as in the SDSS-based taxonomy.[11][12] It is also an assumed C-type asteroid.[3]
Rotation period
Several rotational lightcurves of Teucer have been obtained from photometric observations since 1992.[10][14][15][16][17] Analysis of the best-rated lightcurve from September 2010, by Daniel Coley at the Center for Solar System Studies (U80) gave a well-defined rotation period of ±0.001 hours with a brightness amplitude of 0.20 10.145magnitude (U=3).[3][10][lower-alpha 1]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Teucer measures between 89.43 and 113.99 kilometers in diameter and its surface has an albedo between 0.059 and 0.073.[7][8][9]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0435 and a diameter of 110.72 kilometers based on an absolute magnitude of 8.8.[3] In June 2014, an observed asteroid occultation gave a cross-section of km × 114.0 km (poor fit). 114.0[6]
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Notes
References
- 1 2 3 4 5 6 7 8 "2797 Teucer (1981 LK)". Minor Planet Center. Retrieved 5 June 2018.
- 1 2 3 4 "JPL Small-Body Database Browser: 2797 Teucer (1981 LK)" (2018-05-25 last obs.). Jet Propulsion Laboratory. Retrieved 5 June 2018.
- 1 2 3 4 5 6 7 "LCDB Data for (2797) Teucer". Asteroid Lightcurve Database (LCDB). Retrieved 5 June 2018.
- ↑ "List of Jupiter Trojans". Minor Planet Center. 30 May 2018. Retrieved 5 June 2018.
- 1 2 3 "Asteroid (2797) Teucer – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 5 June 2018.
- 1 2 3 "Asteroid 2797 Teucer". Small Bodies Data Ferret. Retrieved 5 June 2018.
- 1 2 3 4 Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy" (PDF). The Astrophysical Journal. 759 (1): 10. arXiv:1209.1549. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 9 June 2018. (online catalog)
- 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 15 June 2018.
- 1 2 3 4 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 15 June 2018. (online, AcuA catalog p. 153)
- 1 2 3 French, Linda M.; Stephens, Robert D.; Lederer, Susan M.; Coley, Daniel R.; Rohl, Derrick A. (April 2011). "Preliminary Results from a Study of Trojan Asteroids". The Minor Planet Bulletin. 38 (2): 116–120. Bibcode:2011MPBu...38..116F. ISSN 1052-8091. Retrieved 5 June 2018.
- 1 2 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" (PDF). Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 5 June 2018.
- 1 2 Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi:10.1051/0004-6361/200913322. Retrieved 15 June 2018.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 June 2018.
- ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (2797) Teucer". Geneva Observatory. Retrieved 5 June 2018.
- ↑ Stephens, Robert D.; Coley, Daniel, R.; French, Linda M. (January 2016). "Large L5 Jovian Trojan Asteroid Lightcurves from the Center for Solar System Studies". The Minor Planet Bulletin. 43 (1): 15–22. Bibcode:2016MPBu...43...15S. ISSN 1052-8091. Retrieved 5 June 2018.
- ↑ Stephens, Robert D.; Coley, Daniel R.; French, Linda M. (October 2014). "Trojan Asteroids Observed from CS3: 2014 January-May". The Minor Planet Bulletin. 41 (4): 210–212. Bibcode:2014MPBu...41..210S. ISSN 1052-8091. Retrieved 5 June 2018.
- ↑ Binzel, Richard P.; Sauter, Linda M. (February 1992). "Trojan, Hilda, and Cybele asteroids - New lightcurve observations and analysis". Icarus: 222–238. Bibcode:1992Icar...95..222B. doi:10.1016/0019-1035(92)90039-A. ISSN 0019-1035. Retrieved 5 June 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2797 Teucer at AstDyS-2, Asteroids—Dynamic Site
- 2797 Teucer at the JPL Small-Body Database