854 Frostia

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**854 Frostia**
Discovery ^A

Discoverer	S. Beljavskij
Discovery date	April 3, 1916
Alternate designations ^B	SIGMA 29; 1931 MB; 1935 QE; 1950 VP
Category	Main belt
Orbital elements ^C
Epoch November 26, 2005 (JD 2453700.5)
Eccentricity (e)	0.174
Semi-major axis (a)	354.326 G m (2.369 AU)
Perihelion (q)	292.801 Gm (1.957 AU)
Aphelion (Q)	415.852 Gm (2.780 AU)
Orbital period (P)	1331.422 d (3.65 a)
Mean orbital speed	19.21 km/s
Inclination (i)	6.091°
Longitude of the ascending node (Ω)	190.837°
Argument of perihelion (ω)	83.494°
Mean anomaly (M)	154.919°
Physical characteristics ^D
Dimensions	13.7 ± 5.6 km
Mass	3.5×10¹⁵? kg
Density	2.0? g/cm³
Surface gravity	0.0042? m/s²
Escape velocity	0.0079? km/s
Rotation period	1.57 d
Spectral class	?
Absolute magnitude	12.1
Albedo (geometric)	0.1?
Mean surface temperature	~181 K
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854 Frostia is an asteroid orbiting the Sun. It is named after Edwin Brant Frost, an American astronomer.

A satellite, designated S/2004 (854) 1, was identified based on lightcurve observations in July 2004 by Raoul Behrend, Laurent Bernasconi, Alain Klotz, and Russell I. Durkee. It is roughly 10km in diameter and orbits about 25 km from Frostia in 1.5713 days.

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