Asteroids with Satellites Database--Johnston's Archive

2007 DS101

compiled by Wm. Robert Johnston
last updated 22 March 2020

--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: TNO, Cubewano

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 43.845 AU
orbital period P: 290.33 yr
(= 106041 d)
eccentricity e: 0.08811
perihelion distance q: 39.981 AU
aphelion distance Q: 47.708 AU
inclination i: 1.39216°
argument of perihelion ω: 218.48°
ascending node Ω: 26.37°
mean anomaly M: 282.32°
perihelion passage TP: 2083 Jan 22
Epoch: 2020 May 31
data arc: 2005-2013 (29 obs.)
Earth MOID: 38.9685 AU
Jupiter Tisserand invariant TJ: 5.9
Neptune Tisserand invariant TN:3.091 [*D]

orbital data, secondary:
semimajor axis as: 2617 ± 62 km (separation) [G20a]
separation/primary radius as/rp:42 [*E]
separation/Hill radius as/rH:0.0068 [*E]
orbital period Ps: 30 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 6.7 [MPC]
7.2 ± 0.5 [G20a]
slope parameter G: (0.15) [*A]
effective diameter dE: 161 km [*E]
geometric albedo: (0.09 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1 g/cm3) [*A]
Hill radius rH: 380000 km [*E]

other data, primary:
diameter dp: 124 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 102 km [*E]
diameter ratio ds/dp: 0.82
component mag. difference ΔM: 0.43 [G20a]
rotation period RPs: ?

-- 2007 DS101 --discovery and notes:

Primary discovered 2007 Feb 18 from Mauna Kea, Hawaii, USA by Mauna Kea. Linked to prediscovery observations from 2005 Feb 10.

Companion discovered 2020 Feb 04 by Solar System Origins Legacy Survey (A. H. Parker et al.) using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2020 Feb 23 [G20a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2020 by Wm. Robert Johnston.
Last modified 22 March 2020.
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