1313 Berna

Minor Planet
name=1313 Berna
discoverer=Sylvain Julien Victor Arend
discovery_date=August 24, 1933
designations=A911 OA; 1926 EA; 1933 QG
category=Main belt
epoch=November 26, 2005 (JD 2453700.5)
semimajor=397.628 Gm (2.658 AU)
perihelion=315.311 Gm (2.108 AU)
aphelion=479.945 Gm (3.208 AU)
eccentricity=0.207
period=1582.799 d (4.33 a)
inclination=12.523°
asc_node=298.466°
arg_peri=99.333°
mean_anomaly=206.388°
speed=18.07 km/s
dimensions=11? km
mass=7.7×10¹⁴? kg
density=1.1 g/cm³
gravity=0.0017? m/s²
escape_velocity=0.0043? km/s
rotation= 1.061±0.005 d
spectral_class=?
abs_mag=11.8
albedo=0.1?
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.

External links

* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.txt Discovery Circumstances: Numbered Minor Planets]
* [http://www.johnstonsarchive.net/astro/astmoons/am-01313.html Johnston Archive entry for 1313 Berna]
* [http://cfa-www.harvard.edu/iauc/08200/08292.html IAUC 8292]