Asteroids with Satellites Database--Johnston's Archive

2015 QL14

compiled by Wm. Robert Johnston
last updated 23 September 2018

--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: 43.698 AU
orbital period P: 288.87 yr
(= 105508 d)
eccentricity e: 0.1146
perihelion distance q: 38.69 AU
aphelion distance Q: 48.705 AU
inclination i: 12.19921°
argument of perihelion ω: 352.38°
ascending node Ω: 26.303°
mean anomaly M: 303.14°
perihelion passage TP: 2063 Nov 07
Epoch: 2018 Mar 23
data arc: 2015-2017 (16 obs.)
Earth MOID: 37.6922 AU
Jupiter Tisserand invariant TJ: 5.747
Neptune Tisserand invariant TN:3.029 [*D]


orbital data, secondary:
semimajor axis as: 52000 km (separation) [S18c]
orbital period Ps: 2300 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 7 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 180 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: 460000 km [*E]

other data, primary:
diameter dp: 130 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 120 km [*E]
diameter ratio ds/dp: 0.9 [*D]
component mag. difference ΔM: 0.2 [S18c]
rotation period RPs: ?

-- 2015 QL14 --discovery and notes:

Primary discovered 2015 Aug 16 from Cerro Tololo Observatory, La Serena, Chile by S. S. Sheppard.

Companion discovered 2017 Nov 22 by S. S. Sheppard and C. A. Trujillo using adaptive optics telescope observations from Magellan Telescope. Announced 2018 Mar 07 [S18c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2018 by Wm. Robert Johnston.
Last modified 23 September 2018.
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