Asteroids with Satellites Database--Johnston's Archive

1999 RT214

compiled by Wm. Robert Johnston
last updated 27 May 2019

--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: 42.6472 AU
orbital period P: 278.507 yr
(= 101726.6 d)
eccentricity e: 0.04889
perihelion distance q: 40.5621 AU
aphelion distance Q: 44.7323 AU
inclination i: 2.57607°
argument of perihelion ω: 204.9861°
ascending node Ω: 138.0501°
mean anomaly M: 2.867°
perihelion passage TP: 2017 Feb 05.9
Epoch: 2019 Apr 27
data arc: 1999-2008 (44 obs.)
Earth MOID: 39.5537 AU
Jupiter Tisserand invariant TJ: 5.835
Neptune Tisserand invariant TN:3.082 [*D]

orbital data, secondary:
semimajor axis as: 3396 ± 66 km [G19b]
separation/primary radius as/rp:104 [*D]
separation/Hill radius as/rH:0.018 [*D]
orbital period Ps: 126.504 ± 0.046 d [G19b]
eccentricity es: 0.298 ± 0.026 [G19b]
inclination is:37.5° ± 1.2° [G19b]
ascending node Ωs:40.1° ± 2.1° [G19b]
argument of pericenter ωs:156.8° ± 1.9° [G19b]
mean anomaly M:125.7° ± 1.9° [G19b]
Epoch:2014 Dec 08.5
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 7.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 79 km [*E]
geometric albedo: (0.09 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 1.94x1017 ± 1.1x1016 kg [G19b]
density ρ: (1 g/cm3) [*A]
Hill radius rH: 190000 km [*E]

other data, primary:
diameter dp: 65 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 45 km [*E]
diameter ratio ds/dp: 0.689 ± 0.029 [N08c]
component mag. difference ΔM: 0.8 [N06b]
rotation period RPs: ?

-- 1999 RT214 --discovery and notes:

Primary discovered 1999 Sep 06 from Mauna Kea Observatory, Hawaii, USA by C. A. Trujillo, J. X. Luu, and D. C. Jewitt.

Companion discovered 2006 Jul 25 by K. S. Noll, W. M. Grundy, H. F. Levison, and D. C. Stephens using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2006 Sep 29 [N06b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2006-2014, 2019 by Wm. Robert Johnston.
Last modified 27 May 2019.
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