Asteroids with Satellites Database--Johnston's Archive
(15700)
1987 QD
compiled by Wm. Robert Johnston
last updated
29 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:
Mars crossing asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.208448699 AU
| |
orbital period P: |
3.282004523 yr
(= 1198.752152 d)
| |
eccentricity e: |
0.315943606
| |
perihelion distance q: |
1.510703453 AU
| |
aphelion distance Q: |
2.906193944 AU
| |
inclination i: |
26.77721812°
| |
argument of perihelion ω: |
119.3688465°
| |
ascending node Ω: |
175.5081434°
| |
mean anomaly M: |
72.41362694°
| |
perihelion passage TP: |
2013 Sep 23.87224
| |
Epoch: |
2014 May 23
| |
data arc: |
1954-2013
(602 obs.)
| |
Earth MOID: |
0.619231 AU
| |
Jupiter Tisserand invariant TJ: |
3.46
|
orbital data, secondary:
|
semimajor axis as: |
10
km
[*E]
| |
separation/primary radius as/rp: | 7.1 [*E] | |
separation/Hill radius as/rH: | 0.030 [*E] | |
orbital period Ps: |
2.1
d [W17a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
14.6
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
2.95
km [A17c]
| |
geometric albedo: |
0.268
[*A17]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
330 km [*E]
|
other data, primary:
|
diameter dp: |
2.82
km [*D]
| |
rotation period RPp: |
3.0586
± 0.0001
h [D10b]
| |
amplitude in mag., rotational ΔM: |
0.07
[D10b]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.87
km [*D]
| |
diameter ratio ds/dp: |
0.31
± 0.03
[W17a]
| |
component mag. difference ΔM: |
2.54
± 0.21
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(15700) 1987 QD
--discovery and notes:
Primary discovered
1987 Aug 24
from
Palomar Observatory, California, USA
by
S. Singer-Brewster.
Alternate designation(s):
2000 JD1.
Linked to prediscovery observations from 1954 May 27.
Permanent number assigned 2000 Jul 26.
Companion discovered
2010 Sep 06
by R. Durkee, P. Pravec, K. Hornoch, P. Kusnirak, D. Pray, V. Chiorny, V. Shevchenko, J. Oey, N. Gaftonyuk, Yu. Krugly, D. Higgins, J. Vilagi, S. Gajdos, M. Husarik, M. Pikler, and J. G. Ries
using
lightcurve
observations from Shed of Science Observatory, Minneapolis, Minnesota, USA; Ondrejov Observatory, Czech Republic; Carbuncle Hill Observatory, W. Brookfield, MA, USA; Kharkiv Observatory, Ukraine; Leura, New South Wales, Australia; Simeiz Observatory; Canberra, Australia; Modra Observatory, Slovakia; Skalnate Pleso Observatory; McDonald Observatory, Texas, USA.
Announced
2010 Oct 06 [D10b].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Vander Haagen, Gary A. 2011, Minor Planet Bulletin Lightcurves of 10452 ZUEV, (14657) 1998 YU27, and (15700) 1987 QD
- Durkee, R., Pravec, P., Hornoch, K., Kusnirak, P., Pray, D., Brookfield, W., Chiorny, V., Shevchenko, V., Oey, J., Gaftonyuk, N., Krugly, Yu., Higgins, D., Vilagi, J., Gajdos, S., Husarik, M., Pikler, M., & Ries, J. G. 2010, Central Bureau Electronic Telegrams (15700) 1987 QD
©
2010-2017, 2019
by Wm. Robert Johnston.
Last modified
29 May 2019.
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