Asteroids with Satellites Database--Johnston's Archive

(9260) Edwardolson

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: 2.289345475 AU
orbital period P: 3.463978636 yr
(= 1265.2181970 d)
eccentricity e: 0.230276951
perihelion distance q: 1.76216198 AU
aphelion distance Q: 2.816528971 AU
inclination i: 5.0976102°
argument of perihelion ω: 148.398741°
ascending node Ω: 214.605079°
mean anomaly M: 184.076410°
perihelion passage TP: 2016 Jan 31.28257
Epoch: 2014 May 23
data arc: 1953-2014 (1046 obs.)
Earth MOID: 0.761191 AU
Jupiter Tisserand invariant TJ: 3.559

orbital data, secondary:
binary dynamical type:A [P07f]
semimajor axis as: 7.2 km [*E]
separation/primary radius as/rp:3.6 [*E]
separation/Hill radius as/rH:0.013 [*E]
orbital period Ps: 0.741 ± 0.00012 d [J05a]
eccentricity es: ?
normalized ang. mom. αL: 0.91 [P07f]

other data, system (combined):
absolute mag. H: 14 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 4.12 ± 0.36 km [M11b]
geometric albedo: 0.262 ± 0.037 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 550 km [*E]

other data, primary:
diameter dp: 3.98 ± 0.35 km [*D]
rotation period RPp: 3.0852 ± 0.0001 h [J05a]
amplitude in mag., rotational ΔM: 0.11 [J05a]
amplitude in mag., mutual events ΔM:0.115 ±0.035 [J05a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 1.07 ± 0.15 km [*D]
diameter ratio ds/dp: 0.27 ± 0.03 [J05a]
component mag. difference ΔM: 2.8 ± 0.2 [*D]
rotation period RPs: ?

-- (9260) Edwardolson --discovery and notes:

Primary discovered 1953 Oct 08 from Brooklyn, Indiana, USA by Indiana University. Alternate designation(s): 1953 TA1, 1991 QH. Permanent number assigned 1998 Oct 05.

Named 2004 Jul 13 for Edward C. Olson (1930-) [MPC52322].

Companion discovered 2005 Oct 06 by M. Jakubik, M. Husarik, J. Vilagi, S. Gajdos, A. Galad, P. Pravec, P. Kusnirak, W. Cooney, J. Gross, D. Terrell, D. Pray, and R. Stephens using lightcurve observations from Skalnate Pleso Obs; Modra Observatory, Slovakia; Ondrejov Observatory, Czech Republic; Sonoita Research Observatory, Sonoita, Arizona, USA; Greene, Rhode Island, USA; Yucca Valley, California, USA. Announced 2005 Nov 02 [J05a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2005-2008, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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