7803 Adachi
| Discovery [1] | |
|---|---|
| Discovered by | T. Kobayashi |
| Discovery site | Ōizumi Observatory |
| Discovery date | 4 March 1997 |
| Designations | |
| MPC designation | 7803 Adachi |
|
Named after
|
Makoto Adachi (amateur astronomer)[2] |
| 1997 EW2 · 1973 AA3 1976 UY17 · 1978 EM1 1992 CF2 |
|
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.18 yr (22,713 days) |
| Aphelion | 2.9280 AU |
| Perihelion | 2.6466 AU |
| 2.7873 AU | |
| Eccentricity | 0.0504 |
| 4.65 yr (1,700 days) | |
| 25.675° | |
| Inclination | 4.9982° |
| 110.67° | |
| 10.286° | |
| Physical characteristics | |
| Dimensions | 10.31 km (calculated)[3] |
| 5.1966±0.0082 h[4] | |
| 0.057 (assumed)[3] | |
| C [3] | |
| 13.3[1] | |
7803 Adachi, provisional designation 1997 EW2, is a carbonaceous asteroid from the outer region of the asteroid belt, about 10 kilometers in diameter. It was discovered by Japanese amateur astronomer Takao Kobayashi at the Ōizumi Observatory in central Japan, on 4 March 1997.[5]
The C-type asteroid orbits the Sun at a distance of 2.6–2.9 AU once every 4 years and 8 months (1,700 days). Its orbit shows an eccentricity of 0.05 and is tilted by 5 degrees to the plane of the ecliptic.[1] A photometric light-curve analysis at the Palomar Transient Factory in 2011 has rendered a rotation period of 5.1966±0.0082 hours with an brightness amplitude of 0.33 in magnitude,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.06 for the asteroid's surface, a typical value for carbonaceous asteroids.[3]
The minor planet was named after Japanese amateur astronomer and elementary school teacher from Kyoto, Makoto Adachi (b. 1953), who has continuously observed Jupiter and other planets since 1969. Adachi is also director of the Oriental Astronomical Association in charge of the association’s activities.[2]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 3.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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 (5001)-(10000) – Minor Planet Center
- 7803 Adachi at the JPL Small-Body Database
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