(9203) Myrtus
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Asteroid (9203) Myrtus |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.1640 AU |
| eccentricity | 0.1080 |
| Perihelion - aphelion | 2.8224 AU - 3.5057 AU |
| Inclination of the orbit plane | 2.5747 ° |
| Length of the ascending node | 84.9386 ° |
| Argument of the periapsis | 164.0408 ° |
| Time of passage of the perihelion | February 21, 2020 |
| Sidereal period | 5.63 a |
| Mean orbital velocity | 16.72 km / s |
| Physical Properties | |
| Medium diameter | 18.165 km (± 0.158) |
| Albedo | 0.040 (± 0.004) |
| Absolute brightness | 12.5 mag |
| history | |
| Explorer | Eric Walter Elst |
| Date of discovery | October 9, 1993 |
| Another name | 1993 TM 16 , 1988 XX 4 , 1989 YH 2 |
| 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. | |
(9203) Myrtus is an asteroid of the main outer belt . It was discovered on October 9, 1993 by the Belgian astronomer Eric Walter Elst at the La Silla Observatory of the European Southern Observatory in Chile ( IAU code 809). The asteroid had previously been sighted from December 5 to 8, 1988 under the provisional designation 1988 XX 4 at the Japanese Kiso Observatory and on December 30, 1989 (1989 YH 2 ) at the Australian Siding Spring Observatory .
The mean diameter of the asteroid was calculated to be 18.165 km (± 0.158). With an albedo of 0.040 (± 0.004) it has a very dark surface.
The asteroid belongs to the Themis family, a group of asteroids named after (24) Themis . The timeless (non- osculating ) orbital elements of (9203) Myrtus are almost identical to those of seven smaller ones (if one considers the absolute brightness of 15.3, 16.4, 16.1, 15.8, 16.9, 17, 2 and 16.9 versus 12.5) Asteroids: (95567) 2002 EN 108 , (209377) 2004 ES 28 , (255460) 2005 YS 77 , (269315) 2008 SD 166 , (418556) 2008 SD 123 , (464391 ) 2016 BW 4 and 2013 HY 108 .
(9203) Myrtus was named on April 2, 1999 after the myrtle family ( Myrtaceae ).
Web links
- (9203) Myrtus in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (9203) Myrtus in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances of (9203) Myrtus 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 from (9203) Myrtus on minorplanetcenter.net (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)