Asteroids with Satellites Database--Johnston's Archive

1998 WV24

compiled by Wm. Robert Johnston
last updated 20 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: TNO, plutino

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 39.123 AU
orbital period P: 244.710 yr
(= 89380.3 d)
eccentricity e: 0.03730
perihelion distance q: 37.6634 AU
aphelion distance Q: 40.582 AU
inclination i: 1.51775°
argument of perihelion ω: 164.70°
ascending node Ω: 183.682°
mean anomaly M: 74.83°
perihelion passage TP: 1963 Jul 11
Epoch: 2014 May 23
data arc: 1998-2008 (20 obs.)
Earth MOID: 36.6558 AU
Jupiter Tisserand invariant TJ: 5.611
Neptune Tisserand invariant TN:3.05 [*D]

orbital data, secondary:
semimajor axis as: 1420 ± 60 km (separation) [B08a]
separation/primary radius as/rp:26 [*E]
separation/Hill radius as/rH:0.0043 [*E]
orbital period Ps: 14 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 7.4 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 146 km [*E]
geometric albedo: (0.09 ) [*A]
color index U-B: ?
color index B-V: 0.77 [T00b]
color index V-R:0.5 ± 0.03 [T00b]
color index B-R:1.27 ± 0.03 [T00b]
taxonomic type: ?
mass m: ?
density ρ: (1 g/cm3) [*A]
Hill radius rH: 330000 km [*E]

other data, primary:
diameter dp: 110 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 96 km [*E]
diameter ratio ds/dp: 0.871 [B08a]
component mag. difference ΔM: 0.3 [* D]
rotation period RPs: ?

-- 1998 WV24 --discovery and notes:

Primary discovered 1998 Nov 18 from Kitt Peak Observatory, Arizona, USA by M. W. Buie.

Companion discovered 2007 Aug 27 by S. D. Benecchi, K. S. Noll, E. A. Barker, W. M. Grundy, and H. F. Levison using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2008 Oct 29 [B08a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2008, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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