Asteroids with Satellites Database--Johnston's Archive

(172376) 2002 YE25

compiled by Wm. Robert Johnston
last updated 21 July 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: main belt asteroid

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 3.150101976 AU
orbital period P: 5.591072475 yr
(= 2042.139222 d)
eccentricity e: 0.059985428
perihelion distance q: 2.96114176 AU
aphelion distance Q: 3.339062192 AU
inclination i: 12.1195767°
argument of perihelion ω: 127.959484°
ascending node Ω: 279.826413°
mean anomaly M: 230.753646°
perihelion passage TP: 2024 Aug 11.1640
Epoch: 2022 Aug 09
data arc: 2001-2022 (571 obs.)
Earth MOID: 1.99119 AU
Jupiter Tisserand invariant TJ: 3.171

orbital data, secondary:
semimajor axis as: 15.3 km (separation) [N22a]
separation/primary radius as/rp:8.1 [*E]
separation/Hill radius as/rH:0.015 [*E]
orbital period Ps: 1.9 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.85 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.62 ± 0.26 km [*M]
geometric albedo: 0.089 ± 0.008 [*M]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1000 km [*E]

other data, primary:
diameter dp: >3.8 km [N22a]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >3.3 km [N22a]
diameter ratio ds/dp: 0.87 [*D]
component mag. difference ΔM: 0.3 [*D]
rotation period RPs: ?

-- (172376) 2002 YE25 --discovery and notes:

Primary discovered 2002 Dec 31 from Socorro, New Mexico, USA by LINEAR Program. Alternate designation(s): 2007 VH25. Linked to prediscovery observations from 2001 Aug 22. Permanent number assigned 2007 Dec 24.

Companion discovered 2022 May 16 by P. Nosworthy, D. Gault, D. Herald using stellar occultation observations from Hazelbrook, New South Wales, Australia; Hawkesbury Height, New South Wales, Australia. Announced 2022 Jul 18 [N22a].

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--Links to ADS abstracts:

© 2022 by Wm. Robert Johnston.
Last modified 21 July 2022.
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