(261) Prymno
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Asteroid (261) Prymno |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2,332 AU |
| eccentricity | 0.09 |
| Perihelion - aphelion | 2.123 AU - 2.541 AU |
| Inclination of the orbit plane | 3.6 ° |
| Length of the ascending node | 96.7 ° |
| Argument of the periapsis | 65 ° |
| Time of passage of the perihelion | February 4, 2009 |
| Sidereal period | 3 a 205 d |
| Mean orbital velocity | 19.5 km / s |
| Physical Properties | |
| Medium diameter | 51 km |
| Albedo | 0.1141 |
| Rotation period | 8 h 0 min |
| Absolute brightness | 9.44 mag |
| Spectral class | B. |
| history | |
| Explorer | CHF Peters |
| Date of discovery | October 31, 1886 |
| 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. | |
(261) Prymno is an asteroid of the main asteroid belt , which on 31 October 1886 by Christian Heinrich Friedrich Peters at the observatory of Clinton ( United States was discovered).
The heavenly body was named after the nymph Prymno , a daughter of Oceanus and Tethys from Greek mythology .
Prymno moves at a distance of 2.1221 ( perihelion ) to 2.5407 ( aphelion ) astronomical units in 3.5599 years around the sun . The orbit is inclined 3.6352 ° to the ecliptic , the orbital eccentricity is 0.0898.
Prymno has a diameter of 51 kilometers. It has a relatively light surface with an albedo of 0.114. It rotates around its own axis in around 8 hours.