Asteroids with Satellites Database--Johnston's Archive

(854) Frostia

compiled by Wm. Robert Johnston
last updated 21 September 2014

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: main belt asteroid

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.368511967 AU
orbital period P: 3.645201810 yr
(= 1331.4099610 d)
eccentricity e: 0.173568755
perihelion distance q: 1.95741230 AU
aphelion distance Q: 2.779611639 AU
inclination i: 6.0874619°
argument of perihelion ω: 84.361285°
ascending node Ω: 190.605936°
mean anomaly M: 272.234259°
perihelion passage TP: 2015 Apr 12.58939
Epoch: 2014 May 23
data arc: 1942-2014 (1429 obs.)
Earth MOID: 0.952366 AU
Jupiter Tisserand invariant TJ: 3.518

orbital data, secondary:
binary dynamical type:B [P07f]
semimajor axis as: 17 km [*E]
separation/primary radius as/rp:2.46 [B06a]
separation/Hill radius as/rH:0.019 [*D]
orbital period Ps: 1.572 ± 0.00004 d [B06a]
eccentricity es: ?
normalized ang. mom. αL: 1.63 [P07f]

other data, system (combined):
absolute mag. H: 11.9 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 7.84 ± 0.2 km [M11b]
geometric albedo: 0.415 ± 0.026 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 1.65x1014 kg [*D]
density ρ: 0.89 ± 0.14 g/cm3[B06a]
Hill radius rH: 890 km [*D]

other data, primary:
diameter dp: 6.35 ± 0.16 km [*D]
rotation period RPp: 37.728 ± 0.001 h [B06a]
amplitude in mag., rotational ΔM: 0.37 ± 0.01 [B06a]
amplitude in mag., mutual events ΔM:0.80 ±0.03 [B06a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 4.6 km [*D]
diameter ratio ds/dp: 0.724 [B06a]
component mag. difference ΔM: 0.70 [*D]
rotation period RPs: ?

-- (854) Frostia --discovery and notes:

Primary discovered 1916 Apr 03 from Sime´s, Crimea, Russia by S. Beljavskij. Alternate designation(s): 1916 S29, 1931 MB, 1935 QE, 1950 VP. Permanent number assigned -.

Named - for Edwin Brant Frost (1866-1935).

Companion discovered 2004 Jul 17 by R. Behrend, L. Bernasconi, A. Klotz, and R. Durkee using lightcurve observations from Geneva Observatory; Les Engarouines, France; Observatoire de Haute-Provence, France; Shed of Science Observatory, Minneapolis, Minnesota, USA. Announced 2004 Aug [B04e].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2004-2006, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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