2874 Jim Young
| Discovery | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 13 October 1982 |
| Designations | |
| MPC designation | (2874) Jim Young |
|
Named after
|
James Young (astronomer) |
| 1982 TH · 1962 WE 1965 SD · 1972 TD2 1972 XF |
|
| main-belt · Flora | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.61 yr (22,868 days) |
| Aphelion | 2.5451 AU |
| Perihelion | 1.9440 AU |
| 2.2445 AU | |
| Eccentricity | 0.1339 |
| 3.36 yr (1,228 days) | |
| 60.109° | |
| 0° 17m 35.16s / day | |
| Inclination | 4.8912° |
| 79.202° | |
| 322.22° | |
| Physical characteristics | |
| Dimensions |
6.552±0.099 6.999±0.044 km 7.47 km (calculated) 7.70±0.43 km |
| 131.3 h | |
|
0.1902±0.0435 0.226±0.042 0.24 (assumed) 0.251±0.030 |
|
| SMASS = S · S | |
| 12.8 · 13.06±0.03 · 13.2 | |
2874 Jim Young, provisional designation 1982 TH, is a stony Florian asteroid and relatively slow rotator from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered on 13 October 1982, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station near Flagstaff, Arizona.
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,228 days). Its orbit has an eccentricity of 0.13 and an inclination of 5° with respect to the ecliptic. The first precovery was taken at the U.S. Palomar Observatory in 1954, extending the asteroid's observation arc by 28 years prior to its discovery.
In January 2007, a rotational light-curve for this asteroid was obtained by U.S. astronomer Donald P. Pray at his Carbuncle Hill Observatory. It gave a very long rotation period of 131.3 hours with a brightness amplitude of approximately 0.75 in magnitude (U=2).
According to two different data sets from NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 6.6 and 7.7 kilometers in diameter and its surface has an albedo between 0.190 and 0.251. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 7.5 kilometers, based on an absolute magnitude of 12.8.
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