Asteroids with Satellites Database--Johnston's Archive

(10123) Fideoja

compiled by Wm. Robert Johnston
last updated 28 November 2015

--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: 2.269309849 AU
orbital period P: 3.418540245 yr
(= 1248.645407 d)
eccentricity e: 0.206295996
perihelion distance q: 1.80116031 AU
aphelion distance Q: 2.737459385 AU
inclination i: 4.0532117°
argument of perihelion ω: 267.427356°
ascending node Ω: 76.8907°
mean anomaly M: 342.515941°
perihelion passage TP: 2015 Feb 07.642751
Epoch: 2014 Dec 09
data arc: 1977-2014 (978 obs.)
Earth MOID: 0.799631 AU
Jupiter Tisserand invariant TJ: 3.582


orbital data, secondary:
semimajor axis as: (13 km?) [*E]
orbital period Ps: 2.352 d [P15f]
eccentricity es: 0 [P15f]
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.48 ± 0.52 km [M11b]
geometric albedo: 0.441 ± 0.094 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 470 km [*E]

other data, primary:
diameter dp: 3.3 km [*E]
rotation period RPp: 2.87 h [P15f]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.2 km [*E]
diameter ratio ds/dp: 0.35 ± 0.1 [P15f]
component mag. difference ΔM: 2.3 [*D]
rotation period RPs: ?

-- (10123) Fideoja --discovery and notes:

Primary discovered 1993 Mar 17 from European Southern Observatory, La Silla, Chile by Uppsala-ESO Survey. Alternate designation(s): 1993 FJ16, 1977 TJ5, 1987 OS1, 1990 KX3, 1992 AS4. Linked to prediscovery observations from 1977 Oct 08. Permanent number assigned 1999 Jul 28.

Named 2005 Jan 25 for the Swedish counties of Fide and Oja [MPC53469].

Companion discovered 2013 Feb 12 by Pravec, P., P. Scheirich, P. Kusnirak, K. Hornoch, and A. Galad using lightcurve observations. Announced 2015 Aug 05 [P15f].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2015 by Wm. Robert Johnston.
Last modified 28 November 2015.
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