Asteroids with Satellites Database--Johnston's Archive

(69406) 1995 SX48

compiled by Wm. Robert Johnston
last updated 20 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, inner


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.843932099 AU
orbital period P: 2.503949634 yr
(= 914.5676037 d)
eccentricity e: 0.022388577
perihelion distance q: 1.80264908 AU
aphelion distance Q: 1.885215115 AU
inclination i: 21.995097°
argument of perihelion ω: 309.11116°
ascending node Ω: 299.345663°
mean anomaly M: 284.53533°
perihelion passage TP: 2014 Nov 30.715
Epoch: 2014 May 23
data arc: 1995-2014 (576 obs.)
Earth MOID: 0.799198 AU
Jupiter Tisserand invariant TJ: 3.926


orbital data, secondary:
semimajor axis as: 5.3 km [*E]
separation/primary radius as/rp:3.4 [*E]
separation/Hill radius as/rH:0.012 [*E]
orbital period Ps: 0.6713 ± 0.0008 d [W14b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.4 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.18 ± 0.02 km [M11b]
geometric albedo: 0.332 ± 0.045 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 440 km [*E]

other data, primary:
diameter dp: 3.12 ± 0.02 km [*D]
rotation period RPp: 4.486 ± 0.001 h [W14b]
amplitude in mag., rotational ΔM: 0.15 ± 0.03 [W14b]
amplitude in mag., mutual events ΔM:0.04 [W14b]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 0.59 ± 0.06 km [*D]
diameter ratio ds/dp: >0.19 ± 0.02 [W14b]
component mag. difference ΔM: <3.6 ± 0.2 [*D]
rotation period RPs: ?

-- (69406) 1995 SX48 --discovery and notes:

Primary discovered 1995 Sep 30 from Catalina Station, Arizona, USA by T. B. Spahr. Alternate designation(s): 1998 WR23. Permanent number assigned 2003 Nov 09.

Companion discovered 2013 Dec 26 by B. D. Warner using lightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA. Announced 2014 Mar [W14b].

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--Links to ADS abstracts:


© 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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