Asteroids with Satellites Database--Johnston's Archive

(236716) 2007 FV42

compiled by Wm. Robert Johnston
last updated 30 September 2023

--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: NEA, Amor

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.176057285 AU
orbital period P: 3.2100639792 yr
(= 1172.4758684 d)
eccentricity e: 0.472601181
perihelion distance q: 1.147650042 AU
aphelion distance Q: 3.204464528 AU
inclination i: 9.8320552°
argument of perihelion ω: 181.681858°
ascending node Ω: 100.965426°
mean anomaly M: 17.5490015°
perihelion passage TP: 2023 Jul 17.845053
Epoch: 2023 Sep 13
data arc: 1991-2023 (1018 obs.)
Earth MOID: 0.130605 AU
Jupiter Tisserand invariant TJ: 3.514

orbital data, secondary:
semimajor axis as: 1.3 km [*E]
separation/primary radius as/rp:3.4 [*E]
separation/Hill radius as/rH:0.010 [*E]
orbital period Ps: 0.6542 ± 0.0004 d [W23d]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 17.92 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 0.86 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: S, Sr (Tholen) [W23d]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 130 km [*E]

other data, primary:
diameter dp: 0.76 km [*E]
rotation period RPp: 2.687 ± 0.001 h [W23d]
amplitude in mag., rotational ΔM: 0.16 [W23d]
amplitude in mag., mutual events ΔM:0.24 [W23d]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >0.41 km [*E]
diameter ratio ds/dp: >0.54 ± 0.03 [W23d]
component mag. difference ΔM: <1.3 ± 0.1 [*D]
rotation period RPs: ?

-- (236716) 2007 FV42 --discovery and notes:

Primary discovered 2007 Mar 20 from Catalina Station, Arizona, USA by Catalina Sky Survey. Alternate designation(s): 1991 RQ32. Linked to prediscovery observations from 1991 Sep 05. Permanent number assigned 2010 Mar 30.

Companion discovered 2023 Jun 20 by B. D. Warner using lightcurve observations from Center for Solar System Studies, Landers, California, USA. Announced 2023 Sep [W23d].

--Links, more technical:

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--Links to ADS abstracts:

© 2023 by Wm. Robert Johnston.
Last modified 30 September 2023.
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