Asteroids with Satellites Database--Johnston's Archive

(7792) 1995 WZ3

compiled by Wm. Robert Johnston
last updated 25 September 2021

--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: 2.2976089592 AU
orbital period P: 3.4826848288 yr
(= 1272.0746584 d)
eccentricity e: 0.148236099
perihelion distance q: 1.95702037 AU
aphelion distance Q: 2.6381975482 AU
inclination i: 7.1953555°
argument of perihelion ω: 142.809541°
ascending node Ω: 61.474128°
mean anomaly M: 314.889501°
perihelion passage TP: 2021 May 25.399787
Epoch: 2021 Jul 01
data arc: 1976-2021 (2496 obs.)
Earth MOID: 0.956763 AU
Jupiter Tisserand invariant TJ: 3.569


orbital data, secondary:
semimajor axis as: 14 km [*E]
separation/primary radius as/rp:3.9 [*E]
separation/Hill radius as/rH:0.013 [*E]
orbital period Ps: 0.8004 ± 0.0002 d [P21e]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.07 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 7.45 ± 0.05 km [M**]
geometric albedo: 0.0242 ± 0.045 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1100 km [*E]

other data, primary:
diameter dp: 7.21 ± 0.05 km [*D]
rotation period RPp: 3.15996 ± 0.00012 h [P21e]
amplitude in mag., rotational ΔM: 0.21 [P21e]
amplitude in mag., mutual events ΔM:0.1 ±0.03 [P21e]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.87 ± 0.14 km [*D]
diameter ratio ds/dp: 0.26 ± 0.02 [P21e]
component mag. difference ΔM: 2.93 ± 0.17 [*D]
rotation period RPs: ?

-- (7792) 1995 WZ3 --discovery and notes:

Primary discovered 1995 Nov 18 from Nachi-Katsurra by Y. Shimizu and T. Urata. Alternate designation(s): 1976 KF1, 1977 SO2, 1991 VL14. Linked to prediscovery observations from 1976 May 29. Permanent number assigned 1997 Nov 14.

Companion discovered 2021 Mar 14 by Pray, D., P. Pravec, V. Benishek, M. Deldem, A. Marchini, R. Papini, and R. Durkee using lightcurve observations from Sugarloaf Mountain Observatory; Sopot Observatory, Serbia; Les Barres Observatory, Lamanon, France; Astronomical Observatory of the University of Siena; Shed of Science South Observatory, Pontotoc, Texas, USA. Announced 2021 Jun 20 [P21e].

--Links, more technical:

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--Links to ADS abstracts:


© 2021 by Wm. Robert Johnston.
Last modified 25 September 2021.
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