1800 Aguilar
| Discovery [1] | |
|---|---|
| Discovered by | M. Itzigsohn |
| Discovery site | La Plata Observatory |
| Discovery date | 12 September 1950 |
| Designations | |
| MPC designation | 1800 Aguilar |
Named after |
Félix Aguilar (astronomer)[2] |
|
1950 RJ · 1952 BJ 1972 XP2 · 1976 YU7 1977 AE1 | |
| main-belt · Vestian [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.17 yr (23,804 days) |
| Aphelion | 2.6786 AU |
| Perihelion | 2.0356 AU |
| 2.3571 AU | |
| Eccentricity | 0.1363 |
| 3.62 yr (1,322 days) | |
| 331.14° | |
| Inclination | 5.7898° |
| 124.24° | |
| 214.58° | |
| Physical characteristics | |
| Dimensions |
7.384±0.156 km[4] 8.18 km (caculated)[3] |
| 2.478±0.002 h[lower-alpha 1] | |
|
0.2954±0.0470[4] 0.20 (assumed)[3] | |
| S [3] | |
| 12.8[1] | |
|
| |
1800 Aguilar, provisional designation 1950 RJ, is a stony vestian asteroid from the inner regions of the asteroid belt, about 8 kilometers in diameter. It was discovered by Argentine astronomer Miguel Itzigsohn at La Plata Astronomical Observatory, Argentina, on 12 September 1950.[5]
The stony S-type asteroid is a member of the Vesta family. It orbits the Sun at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,322 days). Its orbit shows an eccentricity of 0.14 and is tilted by 6 degrees to the plane of the ecliptic. It has a rotation period of 2.5 hours[lower-alpha 1] and an albedo of 0.30,[4] based on observations by the U.S. Wide-field Infrared Survey Explorer with its NEOWISE mission, while the Collaborative Asteroid Lightcurve Link (CALL) assumes a more typical value for stony asteroids of 0.20.[3]
The asteroid is named after Argentine astronomer Félix Aguilar (1884–1943), former director of the discovering observatory and founder of the University School of Astronomy and Geophysics. He contributed significantly to the development of Argentine astronomy in the first half of the 20th century (also see Félix Aguilar Observatory).[2]
References
- 1 2 Higgins (2011) web: rotation period 2.478±0.002 hours with a brightness amplitude of 0.11 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1800) Aguilar
- 1 2 3 "JPL Small-Body Database Browser: 1800 Aguilar (1950 RJ)" (2015-11-14 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1800) Aguilar. Springer Berlin Heidelberg. p. 144. ISBN 978-3-540-29925-7. Retrieved October 2015.
- 1 2 3 4 5 "LCDB Data for (1800) Aguilar". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
- 1 2 3 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 January 2016.
- ↑ "1800 Aguilar (1950 RJ)". Minor Planet Center. Retrieved January 2016.
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
- 1800 Aguilar at the JPL Small-Body Database
- asteroid light-curves, Higgins, D.J. (2011)
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