Asteroids with Satellites Database--Johnston's Archive

(3982) Kastel

compiled by Wm. Robert Johnston
last updated 21 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: main belt asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.258729314 AU
orbital period P: 3.394724109 yr
(= 1239.9229810 d)
eccentricity e: 0.219375851
perihelion distance q: 1.76321865 AU
aphelion distance Q: 2.754239980 AU
inclination i: 5.2964427°
argument of perihelion ω: 51.038392°
ascending node Ω: 251.929086°
mean anomaly M: 241.894283°
perihelion passage TP: 2015 Jul 03.78331
Epoch: 2014 May 23
data arc: 1930-2014 (1374 obs.)
Earth MOID: 0.752865 AU
Jupiter Tisserand invariant TJ: 3.584


orbital data, secondary:
binary dynamical type:A [L14c]
semimajor axis as: ?
orbital period Ps: ?
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.79 ± 0.36 km [M11b]
geometric albedo: 0.201 ± 0.031 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 930 km [*E]

other data, primary:
diameter dp: 6.79 ± 0.36 km [M11b]
rotation period RPp: 5.835 h [P05a]
amplitude in mag., rotational ΔM: 0.27 [P05a]
amplitude in mag., mutual events ΔM:0.08 [P05a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (3982) Kastel --discovery and notes:

Primary discovered 1984 May 02 from Nauchnyj, Crimea, Ukraine, USSR by L. G. Karachkina. Alternate designation(s): 1984 JP1, 1930 MF, 1947 NE, 1954 RC, 1978 TT5. Linked to prediscovery observations from 1930 Jun 23. Permanent number assigned 1989 Feb 20.

Named 1991 May 28 for Galina Richardovna Kastel' [MPC18306].

Companion discovered 2005 Sep 24 by P. Pravec, P. Kusnirak, L. Kornos, J. Vilagi, D. Pray, R. Durkee, W. Cooney, J. Gross, and D. Terrell using lightcurve observations from Ondrejov Observatory, Czech Republic; Modra Observatory, Slovakia; Coventry, Rhode Island, USA; Shed of Science Observatory, Minneapolis, Minnesota, USA; Sonoita Research Observatory, Arizona, USA. Announced 2005 Oct 01 [P05a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2005-2008, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.