1313 Berna

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1313 Berna
Discovery
Discovered by Sylvain Julien Victor Arend
Discovery date August 24, 1933
Designations
Named after
Bern
A911 OA; 1926 EA; 1933 QG
Minor planet category 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)
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[edit]

  1. ^ a b c 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[edit]