1313 Berna
From Wikipedia, the free encyclopedia
| Discovery A | |
|---|---|
| Discoverer | Sylvain Julien Victor Arend |
| Discovery date | August 24, 1933 |
| Alternate designations B |
A911 OA; 1926 EA; 1933 QG |
| Category | Main belt |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.207 |
| Semi-major axis (a) | 397.628 Gm (2.658 AU) |
| Perihelion (q) | 315.311 Gm (2.108 AU) |
| Aphelion (Q) | 479.945 Gm (3.208 AU) |
| Orbital period (P) | 1582.799 d (4.33 a) |
| Mean orbital speed | 18.07 km/s |
| Inclination (i) | 12.523° |
| Longitude of the ascending node (Ω) |
298.466° |
| Argument of perihelion (ω) |
99.333° |
| Mean anomaly (M) | 206.388° |
| Physical characteristics D | |
| Dimensions | 11? km |
| Mass | 7.7×1014? kg |
| Density | 1.1 g/cm³ |
| Surface gravity | 0.0017? m/s² |
| Escape velocity | 0.0043? km/s |
| Rotation period | 1.061±0.005 d |
| Spectral class | ? |
| Absolute magnitude | 11.8 |
| Albedo (geometric) | 0.1? |
| Mean surface temperature |
~171 K |
1313 Berna is an asteroid orbiting the Sun. It is named after the city of Berne, in Switzerland.
A satellite, designated S/2004 (1313) 1, was identified based on lightcurve observations 6-12 February 2004 by René Roy, Stefano Sposetti, Nicolas Waelchli, Donald P. Pray, Nathanaël Berger, Christophe Demeautis, Daniel Matter, Russell I. Durkee, Alain Klotz, Donn R. Starkey, Vincent Cotrez, and Raoul Behrend. This was announced on 12 February 2004 (although the IAUC announcement only came on 23 February 2004). The moon, estimated to be 11 km across, orbits about 35 km from its primary in 1.061±0.005 d.
[edit] External links
|
|||||
 |
This article about an asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it. |
