(2309) Mr. Spock
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Asteroid (2309) Mr. Spock |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0120 AU |
| eccentricity | 0.0886 |
| Perihelion - aphelion | 2.7451 AU - 3.2790 AU |
| Inclination of the orbit plane | 10.9853 ° |
| Sidereal period | 5.23 years |
| Mean orbital velocity | 17.14 km / s |
| Physical Properties | |
| Medium diameter | 21.29 km |
| Albedo | 0.1177 |
| Rotation period | 6.722 h |
| Absolute brightness | 11.30 mag |
| Spectral class | ? |
| history | |
| Explorer | JB Gibson |
| Date of discovery | 16th August 1971 |
| Another name | 1971 QX1 , 1935 SN1, 1948 EJ1, 1956 TL, 1974 CU, 1977 SF3 |
| 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. | |
(2309) Mr. Spock is an asteroid of the main asteroid belt discovered on August 16, 1971 by James B. Gibson .
properties
Mr. Spock moves from 2.7451 ( perihelion ) to 3.2790 ( aphelion ) astronomical units around the Sun in approximately 5.23 years . The orbit is inclined 10.985 ° to the ecliptic , the orbital eccentricity is 0.0886.
Mr. Spock has a mean diameter of about 13 miles and his albedo is estimated to be 0.1177.
The asteroid belongs to the Eos family , a group of asteroids which typically have large semiaxes from 2.95 to 3.1 AU, bounded inward by the Kirkwood gap of the 7: 3 resonance with Jupiter , and orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago.
Naming
The asteroid was named in 1985 after the explorer's cat , which in turn was named after the Star Trek character Mr. Spock . The naming led to the fact that the International Astronomical Union , which authorizes the naming of celestial bodies, included a passage in its rules for naming asteroids that pet names are no longer desirable.
See also
Individual evidence
- ↑ (2309) Mr. Spock in the Small-Body Database of the Jet Propulsion Laboratory (English).
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family ( PDF , English)
- ↑ Name those asteroids - "In Our Skies" (February 13, 1998, English)
- ↑ IAU: How Minor Planets are named (English)