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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