1313 Berna
| Discovery | |
|---|---|
| Discovered by | Sylvain Julien Victor Arend |
| Discovery date | August 24, 1933 |
| Designations | |
Named after | Bern |
| A911 OA; 1926 EA; 1933 QG | |
| Main belt | |
| Orbital characteristics | |
| Epoch November 26, 2005 (JD 2453700.5) | |
| Aphelion | 479.945 Gm (3.208 AU) |
| Perihelion | 315.311 Gm (2.108 AU) |
| 397.628 Gm (2.658 AU) | |
| Eccentricity | 0.207 |
| 1582.799 d(4.33 a) | |
Average orbital speed | 18.07 km/s |
| 206.388° | |
| Inclination | 12.523° |
| 298.466° | |
| 99.333° | |
| Physical characteristics | |
| Dimensions | 13.93 ± 0.64[1] km |
| Mass | (2.25 ± 2.00) × 1015[1] kg |
Mean density | 1.21 ± 0.14[1] g/cm3 |
| 0.0017? m/s² | |
| 0.0043? km/s | |
| 1.061±0.005 d | |
| Albedo | 0.1? |
| Temperature | ~171 K |
Spectral type | ? |
| 11.8 | |
|
| |
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.
References
- ↑ 1.0 1.1 1.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
External links
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