1749 Telamon

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1749 Telamon
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date 23 September 1949
Designations
MPC designation 1749 Telamon
Named after
Telamon
(Greek mythology)[2]
1949 SB · 1941 BP
1966 CN
Jupiter trojan[1][3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 66.44 yr (24269 days)
Aphelion 5.7019 AU (852.99 Gm)
Perihelion 4.5958 AU (687.52 Gm)
5.1489 AU (770.26 Gm)
Eccentricity 0.10741
11.68 yr (4267.43 d)
121.79°
0° 5m 3.696s / day
Inclination 6.0936°
340.93°
113.28°
Earth MOID 3.61816 AU (541.269 Gm)
Jupiter MOID 0.316074 AU (47.2840 Gm)
Jupiter Tisserand parameter 2.977
Physical characteristics
Dimensions 81.06 km
69.14±4.57 km[4]
64.90±0.67 km[5]
80.91 km (derived)[3]
Mean radius
40.53 ± 3.5 km
16.975 h (0.7073 d)[1][6]
11.187±0.008 h[7]
0.0562
0.078±0.011[4]
0.073±0.011[5]
0.0469 (derived)[3]
0.0562 ± 0.011[1]
C[3]
9.5

1749 Telamon, provisional designation 1949 SB, is a carbonaceous asteroid, about 80 kilometers in diameter. It is a Jupiter Trojan that shares the orbit of the gas giant Jupiter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 23 September 1949.[8]

The C-type Trojan asteroid dwells in the so-called Greek Camp – the L4 Lagrangian point of the Sun–Jupiter system. It therefore orbits the Sun at a distance of 4.6–5.7 AU once every 11 years and 8 months (4,267 days). Its orbit shows an eccentricity of 0.11 and is tilted by 6 degrees to the plane of the ecliptic. It has an albedo of 0.06–0.07, based on observations by the Akari and Wide-field Infrared Survey Explorer satellites.[4][5]

Photometric observations of the body from 1995 were used to build a light-curve rendering a rotation period of 11.2 hours with a brightness variation of 0.1±0.01 in magnitude,[7] while another observation in 2010 rendered a period of 16.9 hours.[6]

The asteroid was named by the discoverer after Telamon, from Greek mythology, who was an argonaut searching for the Golden Fleece, and father of Ajax and Teucer, after whom the minor planets 1404 Ajax and 2797 Teucer are named. Telamon banished his son Teucer (as he had been banished by his own father) when he returned home from the Trojan war without the remains of his brother.[2]

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: 1749 Telamon (1949 SB)" (2015-05-26 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016. 
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1749) Telamon. Springer Berlin Heidelberg. p. 139. ISBN 978-3-540-29925-7. Retrieved November 2015. 
  3. ^ a b c d "LCDB Data for (1749) Telamon". Asteroid Lightcurve Database (LCDB). Retrieved November 2015. 
  4. ^ a b c 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 November 2015. 
  5. ^ a b c 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 November 2015. 
  6. ^ a b 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 November 2015. 
  7. ^ a b Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; et al. (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal 141 (5): 32. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170. Retrieved November 2015. 
  8. ^ "1749 Telamon (1949 SB)". Minor Planet Center. Retrieved November 2015. 

External links[edit]