3192 A'Hearn
| Discovery | |
|---|---|
| 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) |
| 1982 BY1 · 1975 JN | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 41.26 yr (15,069 days) |
| Aphelion | 2.7782 AU |
| Perihelion | 1.9762 AU |
| 2.3772 AU | |
| Eccentricity | 0.1687 |
| 3.67 yr (1,339 days) | |
| 197.52° | |
| 0° 16m 8.04s / day | |
| Inclination | 2.8790° |
| 56.727° | |
| 91.582° | |
| Physical characteristics | |
| Dimensions |
4.361±0.700 5.66 km (calculated) |
| 3.160 h | |
| 0.20 (assumed) 0.354±0.166 |
|
| SMASS = C · C | |
| 13.6 | |
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.
The C-type asteroid orbits the Sun at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,339 days). Its orbit has an eccentricity of 0.17 and an inclination of 3° with respect to the ecliptic. The first precovery was obtained at El Leoncito in 1975, extending the asteroid's observation arc by 7 years prior to its discovery.
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). According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 4.4 kilometers in diameter and its surface has a high albedo of 0.354. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 – despite the fact that the body has been classified as a carbonaceous C-type – and calculates a diameter of 5.7 kilometers based on an absolute magnitude of 13.6.
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