(20625) Noto
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Asteroid (20625) Noto |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Koronis family |
| Major semi-axis | 2.9427 AU |
| eccentricity | 0.0259 |
| Perihelion - aphelion | 2.8665 AU - 3.0188 AU |
| Inclination of the orbit plane | 2.9922 ° |
| Length of the ascending node | 61.7061 ° |
| Argument of the periapsis | 354.3101 ° |
| Sidereal period | 5.05 a |
| Mean orbital velocity | 17.37 km / s |
| Physical Properties | |
| Absolute brightness | 13.8 mag |
| history | |
| Explorer | Akira Tsuchikawa |
| Date of discovery | October 9, 1999 |
| Another name | 1999 TG 20 , 1997 JU 11 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(20625) Noto is a main outer belt asteroid discovered on October 9, 1999 by the Japanese astronomer Akira Tsuchikawa at the Mantenboshi Observatory ( IAU code 417) in western Japan in Yanagida Village, Noto City . An unconfirmed sighting (1997 JU 11 ) of the asteroid had already occurred in 1997 at the Lincoln Laboratory Experimental Test System in Socorro , New Mexico .
The asteroid is a member of the Koronis family, a group of asteroids named after (158) Koronis . Its eccentricity is small, rounded up to 0.0259, so that its orbit around the sun comes very close to an ideal circular orbit, comparable to the circular orbit of the earth , which has a value of 0.0167.
The timeless (non- osculating ) orbital elements of (20625) Noto are almost identical to those of two smaller (assuming the absolute magnitude of 15.2 and 14.7 versus 13.8) asteroids: (37070) 2000 UT 51 and (90659) 3175 T-3 .
(20625) Noto was named after the Noto Peninsula on May 9, 2001 . The American astronomer Percival Lowell had visited the peninsula in 1889 and wrote a book about Noto in 1891, entitled Noto: An Unexplored Corner of Japan .
Web links
- (20625) Noto in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (20625) Noto in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (20625) Noto according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (20625) Noto at the IAU Minor Planet Center (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)