261 Prymno
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| Discovery A | |
|---|---|
| Discoverer | C. H. F. Peters |
| Discovery date | October 31, 1886 |
| Alternate designations B |
n/a |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.09 |
| Semi-major axis (a) | 348.746 Gm (2.331 AU) |
| Perihelion (q) | 317.429 Gm (2.122 AU) |
| Aphelion (Q) | 380.063 Gm (2.541 AU) |
| Orbital period (P) | 1300.07 d (3.56 a) |
| Mean orbital speed | 19.51 km/s |
| Inclination (i) | 3.635° |
| Longitude of the ascending node (Ω) |
96.779° |
| Argument of perihelion (ω) |
65.502° |
| Mean anomaly (M) | 313.525° |
| Physical characteristics D | |
| Dimensions | 51.0 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 8.002 h |
| Spectral class | B |
| Absolute magnitude | 9.44 |
| Albedo (geometric) | 0.114 |
| Mean surface temperature |
unknown |
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.
[edit] References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
| Minor planets | ||
|---|---|---|
| Previous minor planet | 261 Prymno | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
