Asteroids with Satellites Database--Johnston's Archive
(2006)
Polonskaya
compiled by Wm. Robert Johnston
last updated
21 September 2014
--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: |
2.323905449 AU
| |
orbital period P: |
3.542712288 yr
(= 1293.9756630 d)
| |
eccentricity e: |
0.193374097
| |
perihelion distance q: |
1.87452233 AU
| |
aphelion distance Q: |
2.773288566 AU
| |
inclination i: |
4.9188122°
| |
argument of perihelion ω: |
24.400049°
| |
ascending node Ω: |
0.988172°
| |
mean anomaly M: |
160.449899°
| |
perihelion passage TP: |
2012 Oct 23.28259
| |
Epoch: |
2014 May 23
| |
data arc: |
1950-2014
(1209 obs.)
| |
Earth MOID: |
0.878115 AU
| |
Jupiter Tisserand invariant TJ: |
3.546
|
orbital data, secondary:
|
binary dynamical type: | A [P07f] | |
semimajor axis as: |
8.5
km
[*E]
| |
separation/primary radius as/rp: | 3.8 [*E] | |
separation/Hill radius as/rH: | 0.013 [*E] | |
orbital period Ps: |
0.7979
± 0.0008
d [P05c]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
0.87
[P07f]
|
|
other data, system (combined):
|
absolute mag. H: |
12.9
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
4.62
± 0.16
km [M11b]
| |
geometric albedo: |
0.354
± 0.096
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
660 km [*E]
|
other data, primary:
|
diameter dp: |
4.51
± 0.16
km [*D]
| |
rotation period RPp: |
3.118
± 0.000
h [P05c]
| |
amplitude in mag., rotational ΔM: |
0.08
[P05c]
| |
amplitude in mag., mutual events ΔM: | 0.06 [P05c] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.99
km [*D]
| |
diameter ratio ds/dp: |
>0.22
[P05c]
| |
component mag. difference ΔM: |
<3.3
[*D]
| |
rotation period RPs: |
6.6571
± 0.0002
h [P09d]
| |
|
|
--
(2006) Polonskaya
--discovery and notes:
Primary discovered
1973 Sep 22
from
Nauchnyj, Crimea, Ukraine, USSR
by
N. S. Chernykh.
Alternate designation(s):
1973 SB3,
1941 SD, 1948 QH, 1966 VC.
Linked to prediscovery observations from 1950 Apr 17.
Permanent number assigned -.
Named - for Elena Ivanovna Kazimirchak-Polonskaya [MPC4481].
Companion discovered
2005 Nov 01
by D. Pray, P. Pravec, P. Kusnirak, W. Cooney, J. Gross, and D. Terrell
using
lightcurve
observations from Greene, Rhode Island, USA; Ondrejov Observatory, Czech Republic; Sonoita Research Observatory, Sonoita, Arizona, USA.
Announced
2005 Nov 10 [P05c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Pray, D., Pravec, P., Kusnirak, P., Cooney, W., Gross, J., & Terrell, D. 2005, International Astronomical Union Circular (2006) Polonskaya
©
2005-2008, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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