Asteroids with Satellites Database--Johnston's Archive

(3533) Toyota

compiled by Wm. Robert Johnston
last updated 31 December 2022

--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: 2.2204488261 AU
orbital period P: 3.3087911476 yr
(= 1208.5359667 d)
eccentricity e: 0.117146856
perihelion distance q: 1.960330227 AU
aphelion distance Q: 2.480567425 AU
inclination i: 4.87069176°
argument of perihelion ω: 237.4495903°
ascending node Ω: 197.1393943°
mean anomaly M: 324.5239092°
perihelion passage TP: 2023 Jun 24.094810
Epoch: 2023 Feb 25
data arc: 1953-2022 (3450 obs.)
Earth MOID: 0.978789 AU
Jupiter Tisserand invariant TJ: 3.636


orbital data, secondary:
semimajor axis as: 13 km [*E]
separation/primary radius as/rp:3.2 [*E]
separation/Hill radius as/rH:0.011 [*E]
orbital period Ps: 0.6696 ± 0.0001 d [W22g]
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: 8.0 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
color index J-H:0.257 ± 0.094 [LMP]
taxonomic type: Xk (SMASSII) [JPL]
X (Tholen) [LMP]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1220 km [*E]

other data, primary:
diameter dp: 8.0 km [*E]
rotation period RPp: 2.9809 ± 0.0001 h [W22g]
amplitude in mag., rotational ΔM: 0.19 ± 0.01 [W22g]
amplitude in mag., mutual events ΔM:0.08 ±0.01 [W22g]
pole direction Β, λ: ? , ?


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

-- (3533) Toyota --discovery and notes:

Primary discovered 1986 Oct 30 from Toyota, Japan by K. Suzuki and T. Urata. Alternate designation(s): 1986 UE, 1953 VA2, 1971 FJ, 1976 SZ4, 1978 GQ3, 1978 JH3, 1979 QX7, 1983 YJ. Linked to prediscovery observations from 1953 Nov 11. Permanent number assigned 1986 Dec 16.

Named 1987 Sep 07 [MPC012211].

Companion discovered 2022 Jul 02 by B. D. Warner and R. D. Stephens using lightcurve observations from Center for Solar System Studies, Landers, California, USA. Announced 2022 Dec [W22g].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2022 by Wm. Robert Johnston.
Last modified 31 December 2022.
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