1747 Wright
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3D light-curve model of Wright
|
|
| Discovery | |
|---|---|
| Discovered by | C. A. Wirtanen |
| Discovery site | Lick Obs. |
| Discovery date | 14 July 1947 |
| Designations | |
| MPC designation | (1747) Wright |
|
Named after
|
William Wright (observatory's director) |
| 1947 NH | |
| Mars-crosser | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 68.88 yr (25,159 days) |
| Aphelion | 1.8976 AU |
| Perihelion | 1.5207 AU |
| 1.7092 AU | |
| Eccentricity | 0.1103 |
| 2.23 yr (816 days) | |
| 86.444° | |
| 0° 26m 27.96s / day | |
| Inclination | 21.415° |
| 268.39° | |
| 340.40° | |
| Earth MOID | 0.5118 AU |
| Physical characteristics | |
| Dimensions |
5.17±0.24 km 6.35±0.6 km (IRAS:2) |
|
5.28796±0.00005 h 5.2896±0.0002 h 5.290±0.001 h |
|
|
0.2005±0.043 (IRAS:2) 0.321±0.034 |
|
| AU: (Tholen) Sl (SMASS) · S |
|
| 13.35 | |
1747 Wright, provisional designation 1947 NH, is a stony asteroid and a sizable Mars-crosser, approximately 6 kilometers in diameter. It was discovered on 14 July 1947, by American astronomer Carl Wirtanen at Lick Observatory on Mount Hamilton near San Jose, California.
The S-type asteroid is classified as an AU and Sl-type in the respective Tholen and SMASS classification scheme. It orbits the Sun at a distance of 1.5–1.9 AU once every 2 years and 3 months (816 days). Its orbit has an eccentricity of 0.11 and an inclination of 21° with respect to the ecliptic. As no precoveries were taken and no previous identifications were made, Wright's observation arc begins with its discovery observation in 1947.
According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, the asteroid measures 5.17 and 6.35 kilometers in diameter and its surface has an albedo of 0.20 and 0.32, respectively. The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS.
In July 2005, a rotational light-curve for this asteroid was obtained by astronomers Reiner Stoss, Jaime Nomen, Salvador Sánchez and Raoul Behrend at the Mallorca Observatory, Spain. It gave a well-defined rotation period of 5.2896±0.0002 hours with a brightness variation of 0.61 magnitude (U=3). In July 2014, another, concurring light-curve with a period of 5.28796±0.00005 hours and an amplitude of 0.53 was obtained by Robert D. Stephens at the Center for Solar System Studies (CS3, U81) in Landers, southern California.
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