Asteroids with Satellites Database--Johnston's Archive

(15745) Yuliya

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: NEA, Amor

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.7196423496 AU
orbital period P: 2.255055308 yr
(= 823.6745073 d)
eccentricity e: 0.25514481
perihelion distance q: 1.280884529 AU
aphelion distance Q: 2.1584001704 AU
inclination i: 14.4264211°
argument of perihelion ω: 140.550862°
ascending node Ω: 132.629615°
mean anomaly M: 315.5470491°
perihelion passage TP: 2018 Jul 02.707673
Epoch: 2018 Mar 23
data arc: 1982-2018 (967 obs.)
Earth MOID: 0.296073 AU
Jupiter Tisserand invariant TJ: 4.102

orbital data, secondary:
semimajor axis as: 0.86 km [*E]
separation/primary radius as/rp:2.8 [*D]
separation/Hill radius as/rH:0.014 [*D]
orbital period Ps: 0.48896 ± 0.00012 d [B18c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 17.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 0.67 ± 0.23 km [N19a]
geometric albedo: 0.24 ± 0.145 [*T#]
color index U-B: ?
color index B-V: ?
taxonomic type: S (SMASSII) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 60 km [*E]

other data, primary:
diameter dp: 0.61 km [*D]
rotation period RPp: 3.2495 ± 0.0002 h [B18c]
amplitude in mag., rotational ΔM: 0.08 ± 0.02 [B18c]
amplitude in mag., mutual events ΔM:0.235 ±0.025 [B18c]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >0.28 km [*D]
diameter ratio ds/dp: >0.46 [B18c]
component mag. difference ΔM: <1.7 [*D]
rotation period RPs: ?

-- (15745) Yuliya --discovery and notes:

Primary discovered 1991 Aug 03 from European Southern Observatory, La Silla, Chile by E. W. Elst. Alternate designation(s): 1991 PM5, 1982 OP. Linked to prediscovery observations from 1982 Jul 27. Permanent number assigned 2000 Jul 26.

Named 2013 Sep 19 for Yuliya Germanova (1986-) [MPC085013].

Companion discovered 2018 Apr 26 by A. Aznar, O. Vaduvescu, T. Wilson, T. Zegmott, and P. Pravec using lightcurve observations from Roque de los Muchachos Observatory, La Palma, Canary Islands, Spain. Announced 2018 Jun 09 [A18a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2018, 2019 by Wm. Robert Johnston.
Last modified 27 May 2019.
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