(8421) Montanari
|
Asteroid (8421) Montanari |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Koronis family |
| Major semi-axis | 2.8763 AU |
| eccentricity | 0.0312 |
| Perihelion - aphelion | 2.7866 AU - 2.9660 AU |
| Inclination of the orbit plane | 2.3400 ° |
| Length of the ascending node | 156.8216 ° |
| Argument of the periapsis | 287.9981 ° |
| Time of passage of the perihelion | July 6, 2016 |
| Sidereal period | 4.88 a |
| Mean orbital velocity | 17.57 km / s |
| Physical Properties | |
| Medium diameter | 5.661 (± 0.210) km |
| Albedo | 0.264 (± 0.076) |
| Absolute brightness | 13.5 likes |
| history | |
| Explorer | San Vittore Observatory |
| Date of discovery | 2nd December 1996 |
| Another name | 1996 XA 9 , 1976 UX 9 , 1981 UA 26 |
| 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. | |
(8421) Montanari is an asteroid of the main outer belt discovered on December 2, 1996 at the San Vittore Observatory ( IAU code 552) in Bologna . Unconfirmed sightings of the asteroid had already taken place: on October 22nd and 24th, 1976 with the provisional designation 1976 UX 9 at the Japanese Kiso Observatory and on October 25 and 26, 1981 (1981 UA 26 ) at the Palomar Observatory in California .
The asteroid is a member of the Koronis family, a group of asteroids named after (158) Koronis . The timeless (non- osculating ) orbital elements of (8421) Montanari are almost identical to those of seven smaller ones, if one considers the absolute brightness of 14.7, 15.0, 15.5, 16.3, 16.8, 16, 2 and 16.8 compared to 13.5, asteroids: (43549) 2001 FN 16 , (63785) 2001 RM 11 , (144910) 2005 AX 15 , (206727) 2004 BE 78 , (263579) 2008 FR 88 , (278772 ) 2008 SL 156 and (320893) 2008 GP 59 .
The mean diameter of the asteroid was calculated to be 5.661 (± 0.210) km .
(8421) Montanari was named on May 4, 1999 after the Italian astronomer Geminiano Montanari (1633–1687). As early as 1935, a lunar crater on the southern front of the moon was named after Geminiano Montanari: lunar crater Montanari .
See also
Web links
- (8421) Montanari in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (8421) Montanari in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California
- Discovery Circumstances of (8421) Montanari according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Observations by (8421) Montanari on minorplanetcenter.net (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ^ The lunar crater Montanari in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS