Asteroids with Satellites Database--Johnston's Archive

(138095) 2000 DK79

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, Amor (PHA)


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.776509203 AU
orbital period P: 2.367878393 yr
(= 864.8675830 d)
eccentricity e: 0.414352113
perihelion distance q: 1.040408861 AU
aphelion distance Q: 2.512609544 AU
inclination i: 60.683241°
argument of perihelion ω: 2.506941°
ascending node Ω: 43.4760637°
mean anomaly M: 78.5144739°
perihelion passage TP: 2013 Nov 15.37604
Epoch: 2014 May 23
data arc: 1986-2013 (316 obs.)
Earth MOID: 0.0487195 AU
Jupiter Tisserand invariant TJ: 3.45


orbital data, secondary:
semimajor axis as: ?
orbital period Ps: ?
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 16 [MPC]
15.94 ± 0.02 [H13a]
slope parameter G: (0.15) [*A]
effective diameter dE: 2.18 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
color index V-R:0.455 ± 0.018 [H13a]
color index B-R:1.223 ± 0.024 [H13a]
color index V-I:0.751 [H13a]
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 180 km [*E]

other data, primary:
diameter dp: 2.18 km [*E]
rotation period RPp: 4.243 ± 0.001 h [W14d]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (138095) 2000 DK79 --discovery and notes:

Primary discovered 2000 Feb 26 from Socorro, New Mexico, USA by LINEAR. Linked to prediscovery observations from 1986 Apr 09. Permanent number assigned 2006 Dec 05.

Companion discovered 2013 Nov 13 using radar observations. Announced 2013 Nov .

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2013, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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