78431 Kemble
| Discovery [1] | |
|---|---|
| Discovered by | A. Lowe |
| Discovery site | Palomar Obs. |
| Discovery date | 16 August 2002 |
| Designations | |
| MPC designation | 78431 Kemble |
Named after |
Lucian Kemble (Franciscan friar and amateur astronomer)[2] |
|
2002 QJ50 · 1999 YC2 2001 EY26 | |
| main-belt [1] | |
| Orbital characteristics [1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24.55 yr (8,968 days) |
| Aphelion | 2.8113 AU |
| Perihelion | 2.0743 AU |
| 2.4428 AU | |
| Eccentricity | 0.1508 |
| 3.82 yr (1,395 days) | |
| 18.801° | |
| 0° 15m 29.52s / day | |
| Inclination | 2.9958° |
| 226.80° | |
| 356.27° | |
| Physical characteristics | |
| Dimensions | 2±1 km (calculated)[3] |
| 16.7[1] | |
|
| |
78431 Kemble, provisional designation 2002 QJ50, is an asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by astronomer Andrew Lowe on images taken at the U.S. Palomar Observatory, California, on 16 August 2002.[4]
Kemble orbits the Sun at a distance of 2.1–2.8 AU once every 3 years and 10 months (1,395 days). Its orbit has an eccentricity of 0.15 and an inclination of 3° with respect to the ecliptic.[1] A precovery obtained at the Steward Observatory (Kitt Peak) in 1991, extends the the body's observation arc by 11 years prior to its discovery observation.[4]
As of 2016, Kemble's effective size, its composition and albedo, as well as its rotation period and shape remain unknown.[1] Based on its absolute magnitude of 16.7 and an assumed albedo in the range of 0.05 to 0.25, a generic diameter of 1 to 3 kilometers can be derived.[3] Since asteroids in the inner main-belt are often of a silicaceous rather than of a carbonaceous composition, with higher albedos, typically around 0.20, the asteroid's diameter might be on the lower end of NASA's published conversion table, as the higher the body's reflectivity (albedo), the smaller its diameter, for a given absolute magnitude (brightness).[3]
The minor planet was named in honour of Father Lucian Kemble (1922–1999), who was a Franciscan friar and astronomer. His recorded main interest in astronomy was searching out deep sky objects and he was also known for his interest in asterisms such as Kemble's Cascade.[2][5][6] Naming citation was published on 18 September 2005 (M.P.C. 54828).[7]
References
- 1 2 3 4 5 6 "JPL Small-Body Database Browser: 78431 Kemble (2002 QJ50)" (2016-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 2 December 2016.
- 1 2 Schmadel, Lutz D. (2006). Dictionary of Minor Planet Names – (78431) Kemble, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 231. ISBN 978-3-540-34360-8. Retrieved 27 April 2016.
- 1 2 3 "Absolute Magnitude (H)". NASA/JPL. Retrieved 27 February 2016.
- 1 2 "78431 Kemble (2002 QJ50)". Minor Planet Center. Retrieved 27 February 2016.
- ↑ "Credits and Special Mentions – Father Lucian Kemble 1922–1999". The Royal Astronomical Society of Canada – Calgary Centre. Retrieved 27 February 2016.
- ↑ Peter Bergbusch (June 1999). "Obituary - Father Lucian Kemble 1922–1999". Journal of the Royal Astronomical Society of Canada. 93: 151. Bibcode:1999JRASC..93..151. Retrieved 27 February 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 April 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 (75001)-(80000) – Minor Planet Center
- 78431 Kemble at the JPL Small-Body Database
