Asteroids with Satellites Database--Johnston's Archive

(5872) Sugano

compiled by Wm. Robert Johnston
last updated 15 October 2016

--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: 2.249125073 AU
orbital period P: 3.373031606 yr
(= 1232.0230625 d)
eccentricity e: 0.133546107
perihelion distance q: 1.94876318 AU
aphelion distance Q: 2.549486971 AU
inclination i: 6.6085552°
argument of perihelion ω: 131.182714°
ascending node Ω: 242.377206°
mean anomaly M: 349.901735°
perihelion passage TP: 2016 Sep 03.559153
Epoch: 2016 Jul 31
data arc: 1955-2016 (1253 obs.)
Earth MOID: 0.956252 AU
Jupiter Tisserand invariant TJ: 3.608


orbital data, secondary:
semimajor axis as: 11 km [*E]
separation/primary radius as/rp:3.6 [*E]
separation/Hill radius as/rH:0.012 [*E]
orbital period Ps: 0.785 ± 0.001 d [P16c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.6 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.33 km [*E]
geometric albedo: (0.16 ) [*A]
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: 6.06 km [*E]
rotation period RPp: 3.3642 ± 0.0002 h [P16c]
amplitude in mag., rotational ΔM: 0.11 [P16c]
amplitude in mag., mutual events ΔM:0.08 ±0.04 [P16c]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: >1.82 km [*E]
diameter ratio ds/dp: >0.3 [P16c]
component mag. difference ΔM: <2.6 [*D]
rotation period RPs: ?

-- (5872) Sugano --discovery and notes:

Primary discovered 1989 Sep 30 from Minami-Oda by T. Nomura and K. Kawanishi. Alternate designation(s): 1989 SL, 1972 RN1. Linked to prediscovery observations from 1955 Sep 19. Permanent number assigned 1994 Mar 27.

Named 1999 Jul 28 for Matsuo Sugano (1939-) [MPC35483].

Companion discovered 2016 Sep 23 by D. Pray, P. Pravec, K. Hornoch, P. Kusnirak, A. Carbognani, Yu. N. Krugly, V. Chiorny, R. Inasaridze, V. Ayvazian, O. Kvaratskhelia, M. Husarik, M. Pikler, V. Benishek, and I. Molotov using lightcurve observations from Sugarloaf Mountain Observatory, South Deerfield, MA; Ondrejov Observatory; Observatory of the Aosta Vally Autonomous Region; Kharkiv Observatory, Ukraine; Abastumani Observatory; Skalnate Pleso Observatory; Sopot Observatory, Serbia. Announced 2016 Oct 11 [P16c].

--Links, more technical:

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--Links to ADS abstracts:


© 2016 by Wm. Robert Johnston.
Last modified 15 October 2016.
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