Asteroids with Satellites Database--Johnston's Archive

2007 DT103

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: NEA, Apollo (PHA)

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.2058489 AU
orbital period P: 3.2762108 yr
(= 1196.6360 d)
eccentricity e: 0.57557287
perihelion distance q: 0.93622211 AU
aphelion distance Q: 3.4754756 AU
inclination i: 5.4544994°
argument of perihelion ω: 134.149632°
ascending node Ω: 137.0351801°
mean anomaly M: 36.1593°
perihelion passage TP: 2014 Jan 22.806
Epoch: 2014 May 23
data arc: 2007 Feb-2007 Sep (772 obs.)
Earth MOID: 0.0121176 AU
Jupiter Tisserand invariant TJ: 3.419

orbital data, secondary:
semimajor axis as: 0.45 km (separation) [B07b]
separation/primary radius as/rp:3.0 [*E]
separation/Hill radius as/rH:0.020 [*E]
orbital period Ps: 0.56 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 19.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 0.31 km [*D]
geometric albedo: 0.38 [*E]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 22 km [*E]

other data, primary:
diameter dp: 0.3 km [B07b]
rotation period RPp: 2.703 ± 0.04 h [A09a]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >0.08 km [B07b]
diameter ratio ds/dp: 0.267 [*D]
component mag. difference ΔM: 2.9 [* D]
rotation period RPs: ?

-- 2007 DT103 --discovery and notes:

Primary discovered 2007 Feb 26 from Mt. Lemmon, Arizona, USA by Mt. Lemmon Survey.

Companion discovered 2007 Jul 26 by L. A. M. Benner, S. J. Ostro, J. D. Giorgini, J. Van Brimmer, L. Juare, J. S. Jao, R. F. Jurgens, M. A. Slade, and M. W. Busch using radar observations from Goldstone, California, USA. Announced 2007 Aug 03 [B07b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2007-2009, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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