854 Frostia

854 Frostia

Discovery
Discovered by	S. Beljavskij
Discovery date	3 April 1916
Designations
MPC designation	(854) Frostia
Pronunciation	/ˈfrɒstiə/
Alternative designations	SIGMA 29; 1931 MB; 1935 QE; 1950 VP
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	73.52 yr (26853 d)
Aphelion	2.7805 AU (415.96 Gm)
Perihelion	1.9566 AU (292.70 Gm)
Semi-major axis	2.3685 AU (354.32 Gm)
Eccentricity	0.17393
Orbital period (sidereal)	3.65 yr (1331.4 d)
Mean anomaly	128.5557°
Mean motion	0° 16^m 13.393^s / day
Inclination	6.0883°
Longitude of ascending node	190.6003°
Argument of perihelion	84.3355°
Physical characteristics
Dimensions	8.39 ± 1.27 km[2]
Mass	(1.06 ± 0.95) × 10^15 kg[2]
Mean density	0.88 ± 0.13 g/cm^3[2]
Synodic rotation period	37.56 h (1.565 d)
Geometric albedo	0.33-0.6
Absolute magnitude (H)	12.0

S/2004 (854) 1

Discovery
Discovered by	R. Behrend L. Bernasconi A. Klotz R. Durkee
Discovery date	17 July 2004
Detection method	lightcurve
Orbital characteristics
Semi-major axis	17 km
Orbital period (sidereal)	1.572 ± 0.00004 d 1 day, 13 hours, 43 minutes, 41 ± 3 seconds
Angular distance	25 mas (maximum)
Satellite of	854 Frostia
Physical characteristics
Dimensions	4.6 km
Volume	51 km^3 (assumed)
Apparent magnitude	0.7 fainter than primary
Absolute magnitude (H)	~14.8

854 Frostia is a main-belt asteroid orbiting the Sun. It was discovered in 1916 by Sergei Ivanovich Belyavsky from Simeiz Observatory in Crimea and is named after Edwin Brant Frost, an American astronomer. This asteroid measures approximately 8.4 km (5.2 mi) in diameter.^[2]

A satellite, designated S/2004 (854) 1, was identified based on light curve observations in July 2004 by Raoul Behrend, Laurent Bernasconi, Alain Klotz, and Russell I. Durkee. It is roughly 10 km (6.2 mi) in diameter and orbits about 25 km (16 mi) from Frostia with an orbital period of 1.572 days.^[3]

References

1. "854 Frostia (1916 S29)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 4 May 2016.
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.
3. Johnston, Robert. "(854) Frostia". johnstonsarchive.net. Retrieved 28 May 2015.

External links

• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• (854) Frostia, datasheet, johnstonsarchive.net
• Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
• IAUC 8389 announcing the satellite
• 854 Frostia at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 854 Frostia at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters