Asteroids with Satellites Database--Johnston's Archive

(3792) Preston

compiled by Wm. Robert Johnston
last updated 23 April 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: main belt asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.2918070306 AU
orbital period P: 3.469501432 yr
(= 1267.2593318 d)
eccentricity e: 0.220478796
perihelion distance q: 1.78651218 AU
aphelion distance Q: 2.797101884 AU
inclination i: 23.6970964°
argument of perihelion ω: 50.915578°
ascending node Ω: 63.319901°
mean anomaly M: 125.161103°
perihelion passage TP: 2015 Dec 03.412289
Epoch: 2017 Feb 16
data arc: 1980-2016 (998 obs.)
Earth MOID: 0.866544 AU
Jupiter Tisserand invariant TJ: 3.456


orbital data, secondary:
semimajor axis as: ?
orbital period Ps: 1.95 d [B17b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.3 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.16 ± 0.17 km [M11b]
geometric albedo: 0.289 ± 0.043 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: S (SMASSII) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 720 km [*E]

other data, primary:
diameter dp: 5.16 ± 0.17 km [M11b]
rotation period RPp: 2.92768 ± 0.00004 h [B17b]
amplitude in mag., rotational ΔM: 0.22 [B17b]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: 23.852 ± 0.01 h [B17b]

-- (3792) Preston --discovery and notes:

Primary discovered 1985 Mar 22 from Palomar Observatory, California, USA by C. S. Shoemaker and E. M. Shoemaker. Alternate designation(s): 1985 FA, 1980 YF. Linked to prediscovery observations from 1980 Dec 31. Permanent number assigned 1988 Apr 02.

Named 1988 Aug 27 for Richard Preston (1954-) [MPC13482].

Companion discovered 2016 Jan 23 by V. Benishek, F. Pilcher, R. Montaigut, A. Leroy, A. Carbognani, P. Pravec using lightcurve observations from Sopot Observatory, Serbia; Organ Mesa Observatory, New Mexico, USA; OPERA Observatory, France; Astronomical Observatory of the Aosta Valley Autonomous Region, Italy. Announced 2017 Mar [B17b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2017 by Wm. Robert Johnston.
Last modified 23 April 2017.
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