Asteroids with Satellites Database--Johnston's Archive

2014 LQ28

compiled by Wm. Robert Johnston
last updated 15 March 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: 43.5274 AU
orbital period P: 278.18 yr
(= 104891.9 d)
eccentricity e: 0.093352
perihelion distance q: 39.464 AU
aphelion distance Q: 47.5907 AU
inclination i: 1.30096°
argument of perihelion ω: 157.704°
ascending node Ω: 223.3106°
mean anomaly M: 340.877°
perihelion passage TP: 2033 Jun 24
Epoch: 2018 Mar 23
data arc: 2010-2015 (122 obs.)
Earth MOID: 38.4658 AU
Jupiter Tisserand invariant TJ: 5.877


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

other data, system (combined):
absolute mag. H: 5.7 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 320 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: 930000 km [*E]

other data, primary:
diameter dp: 320 km [*E]
rotation period RPp: ?
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: ?

-- 2014 LQ28 --discovery and notes:

Primary discovered 2014. Linked to prediscovery observations from 2010 Sep 15.

Companion discovered by S. S. Sheppard using observations. Announced 2018 Feb 04 [S18a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2018 by Wm. Robert Johnston.
Last modified 15 March 2018.
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