Asteroids with Satellites Database--Johnston's Archive

(17246) Christophedumas and S/2004 (17246) 1

compiled by Wm. Robert Johnston
last updated 21 June 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: 2.838968952 AU
orbital period P: 4.783537322 yr
(= 1747.187007 d)
eccentricity e: 0.021176578
perihelion distance q: 2.77884931 AU
aphelion distance Q: 2.899088599 AU
inclination i: 2.4448935°
argument of perihelion ω: 229.90954°
ascending node Ω: 34.46078°
mean anomaly M: 293.33534°
perihelion passage TP: 2015 Apr 11.543
Epoch: 2014 May 23
data arc: 1971-2014 (907 obs.)
Earth MOID: 1.7636 AU
Jupiter Tisserand invariant TJ: 3.308

orbital data, secondary:
binary dynamical type:W [P07f]
semimajor axis as: 228 km [D10a]
separation/primary radius as/rp:100 [*E]
separation/Hill radius as/rH:0.234 [*E]
orbital period Ps: 90 d [M04a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 4.61 km [*D]
geometric albedo: 0.21 [T04b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 980 km [*E]

other data, primary:
diameter dp: 4.5 km [D10a]
rotation period RPp: >5 h [P11b]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 1 km [D10a]
diameter ratio ds/dp: 0.222 [D10a]
component mag. difference ΔM: 3.3 [* D]
rotation period RPs: ?

-- (17246) Christophedumas and S/2004 (17246) 1 --discovery and notes:

Primary discovered 2000 Apr 05 from Socorro, New Mexico, USA by LINEAR. Alternate designation(s): 2000 GL74, 1973 VM. Linked to prediscovery observations from 1971 Apr 16. Permanent number assigned 2000 Sep 13.

Companion discovered 2004 Jan 14 by P. M. Tamblyn, W. J. Merline, C. R. Chapman, D. Nesvorny, D. D. Durda, C. Dumas, A. D. Storrs, L. M. Close, and F. Menard using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2004 Feb 24 [T04b]. Provisional designation S/2004 (17246) 1.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2004-2014, 2016 by Wm. Robert Johnston.
Last modified 21 June 2016.
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