7638 Gladman
| Discovery | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 26 October 1984 |
| Designations | |
| MPC designation | 7638 Gladman |
|
Named after
|
Brett J. Gladman (astronomer) |
| 1984 UX · 1969 AF 1988 UN |
|
| main-belt · (middle) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.82 yr (17,467 days) |
| Aphelion | 3.3342 AU |
| Perihelion | 1.7424 AU |
| 2.5383 AU | |
| Eccentricity | 0.3136 |
| 4.04 yr (1,477 days) | |
| 3.8765° | |
| 0° 14m 37.32s / day | |
| Inclination | 6.8217° |
| 9.9905° | |
| 22.479° | |
| Earth MOID | 0.7506 AU |
| Physical characteristics | |
| Dimensions |
5.839±0.405 km 5.93 km (calculated) |
|
15 h 16.1956±0.0082 h 17.3±0.1 h |
|
| 0.20 (assumed) 0.248±0.071 |
|
| S | |
| 13.3 · 13.478±0.005 (R) · 13.5 | |
7638 Gladman, provisional designation 1984 UX, is a stony asteroid from the middle region of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 26 October 1984, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona.
The S-type asteroid orbits the Sun at a distance of 1.7–3.3 AU once every 4.04 years (1,477 days). Its orbit has an eccentricity of 0.31 and an inclination of 7° with respect to the ecliptic.Gladman was first identified as "1969 AF" at Crimea–Nauchnij in 1969. The asteroid's observation arc however begins with its first used observation at Palomar Observatory in November 1984, or one month after its official discovery.
Three rotational light-curves have been obtained for Gladman from photometric observations. The first observation from October 2014, by French astronomer Laurent Bernasconi only gave a fragmentary light-curve with a rotation period of 15 hours and brightness variation of 0.21 magnitude (U=1+). Subsequent photometric observations by astronomer James Brinsfield at the Via Capote Observatory (G69) in October 2010 and by the Palomar Transient Factory in March 2014, gave a rotation period of 17.3 and 16.1956 hours with a brightness amplitude of 0.50 and 0.25, respectively (U=2/2).
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