Asteroids with Satellites Database--Johnston's Archive

(461852) 2006 GY2

compiled by Wm. Robert Johnston
last updated 25 March 2016

--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, Apollo (PHA)


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.857632792 AU
orbital period P: 2.531908493 yr
(= 924.779577 d)
eccentricity e: 0.496099857
perihelion distance q: 0.936061429 AU
aphelion distance Q: 2.779204155 AU
inclination i: 30.5687754°
argument of perihelion ω: 216.706955°
ascending node Ω: 54.3458623°
mean anomaly M: 48.335961°
perihelion passage TP: 2014 Jan 18.83303
Epoch: 2014 May 23
data arc: 2006-2011 (294 obs.)
Earth MOID: 0.0081219 AU
Jupiter Tisserand invariant TJ: 3.694


orbital data, secondary:
semimajor axis as: 0.5 km (separation) [B06b]
separation/primary radius as/rp:2.5 [*E]
separation/Hill radius as/rH:0.017 [*E]
orbital period Ps: 0.4875 ± 0.008 d [B06c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 18.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 0.41 km [*D]
geometric albedo: 0.32 [*E]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 29 km [*E]

other data, primary:
diameter dp: 0.4 km [B06b]
rotation period RPp: 2.27 ± 0.01 h [H08b]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 0.08 km [B06b]
diameter ratio ds/dp: 0.2 [*D]
component mag. difference ΔM: 3.5 [* D]
rotation period RPs: ?

-- (461852) 2006 GY2 --discovery and notes:

Primary discovered 2006 Apr 09 from Lincoln Laboratory ETS, New Mexico, USA by LINEAR. Permanent number assigned March 2016.

Companion discovered 2006 May 15 by L. A. M. Benner, M. C. Nolan, M. K. Shepard, J. D. Giorgini, S. J. Ostro, M. W. Busch, and A. A. Hine using radar observations from Arecibo Observatory, Puerto Rico; Goldstone, California, USA. Announced 2006 Jun 02 [B06b].

--Links, more technical:

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--Links to ADS abstracts:


© 2006-2014, 2016 by Wm. Robert Johnston.
Last modified 25 March 2016.
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