Asteroids with Satellites Database--Johnston's Archive

(9783) Tensho-kan

compiled by Wm. Robert Johnston
last updated 28 November 2015

--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: 2.670299051 AU
orbital period P: 4.363548949 yr
(= 1593.816355 d)
eccentricity e: 0.104091294
perihelion distance q: 2.39234417 AU
aphelion distance Q: 2.948253935 AU
inclination i: 1.9592575°
argument of perihelion ω: 128.29429°
ascending node Ω: 278.88497°
mean anomaly M: 254.757457°
perihelion passage TP: 2016 Mar 18.93690
Epoch: 2014 Dec 09
data arc: 1976-2015 (834 obs.)
Earth MOID: 1.40232 AU
Jupiter Tisserand invariant TJ: 3.373


orbital data, secondary:
semimajor axis as: (13 km?) [*E]
orbital period Ps: 1.232 d [P15f]
eccentricity es: 0 [P15f]
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.9 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.33 ± 0.28 km [M11b]
geometric albedo: 0.188 ± 0.049 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 960 km [*E]

other data, primary:
diameter dp: 5.1 km [*E]
rotation period RPp: 2.9 ± 0.5 h [P15f]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.8 km [*E]
diameter ratio ds/dp: 0.35 ± 0.1 [P15f]
component mag. difference ΔM: 2.3 [*D]
rotation period RPs: ?

-- (9783) Tensho-kan --discovery and notes:

Primary discovered 1994 Dec 28 from Oizumi, Japan by T. Kobayashi. Alternate designation(s): 1994 YD1, 1976 UU19, 1982 BP10, 1991 CC2, 1993 PZ5. Linked to prediscovery observations from 1976 Oct 24. Permanent number assigned 1998 Dec 08.

Named 2002 Sep 21 for a Japanese planetarium [MPC46681].

Companion discovered 2013 Mar 09 by Pravec, P., P. Scheirich, P. Kusnirak, K. Hornoch, and A. Galad using lightcurve observations. Announced 2015 Aug 05 [P15f].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2015 by Wm. Robert Johnston.
Last modified 28 November 2015.
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