Global Information261 Prymno information
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | 31 October 1886 |
| Designations | |
MPC designation | (261) Prymno |
| Pronunciation | /ˈprɪmnoʊ/ |
Named after | Prymno |
Alternative designations | A886 UA |
Minor planet category | Main belt |
| Adjectives | Prymnoian /prɪmˈnoʊ.iən/ |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 98.79 yr (36082 d) |
| Aphelion | 2.54054 AU (380.059 Gm) |
| Perihelion | 2.12336 AU (317.650 Gm) |
Semi-major axis | 2.33195 AU (348.855 Gm) |
| Eccentricity | 0.089449 |
Orbital period (sidereal) | 3.56 yr (1300.7 d) |
Average orbital speed | 19.51 km/s |
Mean anomaly | 35.7611° |
Mean motion | 0° 16m 36.386s / day |
| Inclination | 3.63567° |
Longitude of ascending node | 96.6415° |
Argument of perihelion | 65.9065° |
| Physical characteristics | |
| Dimensions | 50.93±1.3 km |
Synodic rotation period | 8.002 h (0.3334 d) |
Geometric albedo | 0.1141±0.006 |
Spectral type | B |
Absolute magnitude (H) | 9.44 |
Prymno (minor planet designation: 261 Prymno) is a somewhat large Main belt asteroid. It is classified as a B-type asteroid and probably has a primitive composition not unlike common C-type carbonaceous asteroids.
It was discovered by C. H. F. Peters on October 31, 1886, in Clinton, New York and was named after the Greek Oceanid Prymno.
- ^ "261 Prymno". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.