(1362) Griqua
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Asteroid (1362) Griqua |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 3.2214 AU |
| eccentricity | 0.3697 |
| Perihelion - aphelion | 2.0304 AU - 4.4125 AU |
| Inclination of the orbit plane | 24.204 ° |
| Sidereal period | 5.78 a |
| Mean orbital velocity | 16.59 km / s |
| Physical Properties | |
| Medium diameter | 29.90 km |
| Dimensions | ? kg |
| Albedo | 0.067 |
| Medium density | ? g / cm³ |
| Rotation period | 6.907 h |
| Absolute brightness | 11,226 mag |
| Spectral class | ? |
| history | |
| Explorer | Cyril V. Jackson |
| Date of discovery | 1935 |
| Another name | 1935 QG 1 , 1931 BN |
| 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. | |
(1362) Griqua is an asteroid of the main belt , which on 31 July 1935 by the South African astronomer Cyril V. Jackson in Johannesburg was discovered.
The asteroid's orbit around the Sun is in a 2: 1 resonance with the orbit of Jupiter . This resonance zone is called the Hecuba gap. There are only a few asteroids there. The orbit of (1362) Griqua is believed to be stable for only about 100 to 500 million years. As the first discovered and probably the largest asteroid with these properties, it is the namesake of the Griqua family, which includes asteroids such as (3688) Navajo , (4177) Kohman , (11665) Dirichlet and (13963) Euphrates .
(1362) Griqua was named after the Griqua tribe in Griqualand , South Africa .
See also
Individual evidence
- ↑ F. Roig, David Nesvorny , Sylvio Ferraz-Mello : Asteroids in the 2: 1 resonance with Jupiter: dynamics and size distribution . Monthly Notices of the Royal Astronomical Society 335, 2002, pages 417 to 431 ( PDF , English)