Asteroids with Satellites Database--Johnston's Archive

2014 OS393

compiled by Wm. Robert Johnston
last updated 23 January 2022

--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: 43.94 AU
orbital period P: 291.3 yr
(= 106394 d)
eccentricity e: 0.03
perihelion distance q: 42.5 AU
aphelion distance Q: 45.35 AU
inclination i: 3.815°
argument of perihelion ω: 79°
ascending node Ω: 138.21°
mean anomaly M: 60°
perihelion passage TP: 1965 Sep 05
Epoch: 2022 Jan 21
data arc: 2014 Jun-Oct (19 obs.)
Earth MOID: 41.5301 AU
Jupiter Tisserand invariant TJ: 5.915
Neptune Tisserand invariant TN:3.096 [*D]


orbital data, secondary:
semimajor axis as: 150 km (separation) [W22b]
separation/primary radius as/rp:10 [*E]
separation/Hill radius as/rH:0.0014 [*E]
orbital period Ps: 1.5 d [W22b]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 10.1 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 42 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: 110000 km [*E]

other data, primary:
diameter dp: 30 km [*E]
rotation period RPp: 36 h [W22b]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 30 km [*E]
diameter ratio ds/dp: 1 [*D]
component mag. difference ΔM: 0 [*D]
rotation period RPs: ?

-- 2014 OS393 --discovery and notes:

Primary discovered 2014 Jul 30 from Hubble Space Telescope by ?. Linked to prediscovery observations from 2014 Jun 25.

Companion discovered 2019 Jan 05 by H. A. Weaver, S. B. Porter, J. R. Spencer, and New Horizons Science Team using observations from New Horizons. Announced 2022 Jan 16 [W22b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2022 by Wm. Robert Johnston.
Last modified 23 January 2022.
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