3192 A'Hearn
| Discovery [1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 30 January 1982 |
| Designations | |
| MPC designation | 3192 A'Hearn |
Named after |
Michael A'Hearn (astronomer)[2] |
| 1982 BY1 · 1975 JN | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 40.18 yr (14,676 days) |
| Aphelion | 2.7782 AU |
| Perihelion | 1.9757 AU |
| 2.377 AU | |
| Eccentricity | 0.1688 |
| 3.66 yr (1,339 days) | |
| 143.7607° | |
| 0° 16m 8.04s / day | |
| Inclination | 2.879° |
| 56.7293° | |
| 91.5616° | |
| Physical characteristics | |
| Dimensions | 5.66 km (calculated)[3] |
| 3.160 h[4] | |
| 0.20 (assumed)[3] | |
|
SMASS = C [1] C [3] | |
| 13.6[1][3] | |
|
| |
3192 A'Hearn, provisional designation 1982 BY1, is a carbonaceous asteroid from the inner regions of the asteroid belt, about 6 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, on 30 January 1982.[5]
The C-type asteroid orbits the Sun at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,338 days). Its orbit shows an eccentricity of 0.17 and is tilted by 3 degrees to the plane of the ecliptic.[1] The first precovery was obtained at El Leoncito in 1975, extending the asteroid's observation arc by 7 years prior to its discovery.[5]
A rotational light-curve for this asteroid was obtained from photometric observations made by Japanese astronomer Sunao Hasegawa, using the 1.05-meter Schmidt telescope at Kiso Observatory in March 2004. It showed a well-defined rotation period of 3.16 hours with a brightness amplitude of 0.20 in magnitude (U=3).[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 – an unusually high value for a carbonaceous body, otherwise known for their low albedos, typically around 0.06 – and calculates a diameter of 5.7 kilometers.[3]
The minor planet was named for American cometary astronomer and professor of astronomy at CMNS, Michael A'Hearn (b. 1940), known for his contribution to cometary science, especially for his wide-range spectroscopic and spectrophotometric observations. He participated in the space-based EPOXI and IUE mission, which, in 1983, detected for the first time the presence of cometary diatomic sulfur while observing Comet IRAS–Araki–Alcock's spectrum.[2][6] Naming citation was published on 22 June 1986 (M.P.C. 10848).[7]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 3192 A'Hearn (1982 BY1)" (2015-07-12 last obs.). Jet Propulsion Laboratory. Retrieved 3 May 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3192) A’Hearn. Springer Berlin Heidelberg. p. 265. ISBN 978-3-540-00238-3. Retrieved 3 May 2016.
- 1 2 3 4 5 6 "LCDB Data for (3192) A'Hearn". Asteroid Lightcurve Database (LCDB). Retrieved 3 May 2016.
- 1 2 Hasegawa, S.; Miyasaka, S.; Mito, H.; Sarugaku, Y.; Ozawa, T.; Kuroda, D.; et al. (May 2012). "Lightcurve Survey of V-Type Asteroids. Observations Until 2005". Asteroids. arXiv:1204.0548
. Bibcode:2012arXiv1204.0548H. Retrieved 3 May 2016. - 1 2 "3192 A'Hearn (1982 BY1)". Minor Planet Center. Retrieved 3 May 2016.
- ↑ Boice, Daniel C.; Reyle, Celine (December 2002). "The Nature of Diatomic Sulfur in Comets". Formation of Cometary Material. Bibcode:2003IAUJD..14E..38B. Retrieved 3 May 2016.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 May 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
- 3192 A'Hearn at the JPL Small-Body Database
