2691 Sérsic
| Discovery [1] | |
|---|---|
| Discovered by | Felix Aguilar Obs. |
| Discovery site | El Leoncito Complex |
| Discovery date | 18 May 1974 |
| Designations | |
| (2691) Sérsic | |
Named after | José Sérsic (Argentine astronomer)[2] |
| 1974 KB · 1938 UU 1978 QR1 | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 67.02 yr (24,480 days) |
| Aphelion | 2.4977 AU |
| Perihelion | 1.9915 AU |
| 2.2446 AU | |
| Eccentricity | 0.1127 |
| 3.36 yr (1,228 days) | |
| 312.67° | |
| 0° 17m 35.16s / day | |
| Inclination | 3.5937° |
| 319.88° | |
| 277.14° | |
| Known satellites | 1[4] |
| Physical characteristics | |
| Dimensions | 5.438±0.119[5] 6.21 km (calculated)[3] |
| 3.8811±0.0003 h | |
| 0.24 (assumed)[3] 0.261±0.062[5] | |
| S [3] | |
| 13.2[1][3] | |
2691 Sérsic, provisional designation 1974 KB, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by staff members at the Felix Aguilar Observatory at El Leoncito Complex in Argentina, on 18 May 1974.[6] The asteroid was named after Argentine astronomer José Luis Sérsic.[2]
Classification and orbit
[edit]Sérsic is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,228 days). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic.[1]
Physical characteristics
[edit]Diameter and albedo
[edit]The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 6.21 kilometers with an absolute magnitude of 13.2.[3]
Satellite
[edit]Sérsic is a binary asteroid. A minor-planet moon, designated S/2011 (2691) 1 was discovered in 2011 from lightcurve observations of the asteroid. It has a diameter of 2.15 ± 0.11 and an orbital period of 1 day, 2 hours, and 48 minutes.[3][4]
Naming
[edit]This minor planet was named in honor of José Luis Sérsic (1933–1993), well known for his work in extragalactic astronomy and on supernovae (also see Sérsic profile and Lenticular galaxy § Sérsic decomposition). He has served as director of the Córdoba Observatory.[2] The approved naming citation was published by the Minor Planet Center on 20 February 1989 (M.P.C. 14207).[7]
References
[edit]- ^ a b c d "JPL Small-Body Database Browser: 2691 Sersic (1974 KB)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 18 June 2017.
- ^ a b c Schmadel, Lutz D. (2007). "(2691) Sersic". Dictionary of Minor Planet Names – (2691) Sersic. Springer Berlin Heidelberg. p. 220. doi:10.1007/978-3-540-29925-7_2692. ISBN 978-3-540-00238-3.
- ^ a b c d e f g "LCDB Data for (2691) Sersic". Asteroid Lightcurve Database (LCDB). Retrieved 18 June 2017.
- ^ a b Johnston, Robert. "(2691) Sersic". johnstonsarchive.net. Retrieved 18 June 2017.
- ^ a b Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 18 June 2017.
- ^ "2691 Sersic (1974 KB)". Minor Planet Center. Retrieved 18 June 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 June 2017.
External links
[edit]- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- 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
- 2691 Sérsic at AstDyS-2, Asteroids—Dynamic Site
- 2691 Sérsic at the JPL Small-Body Database
