Asteroids with Satellites Database--Johnston's Archive

(54697) 2001 FA70

compiled by Wm. Robert Johnston
last updated 16 July 2017

--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: Mars crossing asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.383011875 AU
orbital period P: yr
(= 1343.654889 d)
eccentricity e: 0.331344919
perihelion distance q: 1.593413 AU
aphelion distance Q: 3.172610751 AU
inclination i: 13.0902187°
argument of perihelion ω: 129.347018°
ascending node Ω: 168.479546°
mean anomaly M: 101.5919233°
perihelion passage TP: 2016 Aug 20.820877
Epoch: 2017 Sep 04
data arc: 1997-2016 (842 obs.)
Earth MOID: 0.61412 AU
Jupiter Tisserand invariant TJ: 3.427


orbital data, secondary:
semimajor axis as: ?
orbital period Ps: 0.6777 ± 0.0003 d [W16#]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 15 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.3 km [*E]
geometric albedo:
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 400 km [*E]

other data, primary:
diameter dp: 3.2 km [*E]
rotation period RPp: 2.7077 ± 0.0003 h [W16#]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 0.6 km [*E]
diameter ratio ds/dp: >0.19 ± 0.02 [W16#]
component mag. difference ΔM: ?
rotation period RPs: ?

-- (54697) 2001 FA70 --discovery and notes:

Primary discovered 2001 Mar 19 from Socorro, New Mexico, USA by LINEAR Program. Linked to prediscovery observations from 1997 Mar 15. Permanent number assigned 2003 Feb 16.

Companion discovered 2016 Jun 17 by B. D. Warner using lightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA. Announced 2016 Sep [W16#].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2017 by Wm. Robert Johnston.
Last modified 16 July 2017.
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