Asteroids with Satellites Database--Johnston's Archive
2003 WU188
compiled by Wm. Robert Johnston
last updated
20 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:
TNO, Cubewano
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
44.410 AU
| |
orbital period P: |
295.959 yr
(= 108099.1 d)
| |
eccentricity e: |
0.04184
| |
perihelion distance q: |
42.552 AU
| |
aphelion distance Q: |
46.268 AU
| |
inclination i: |
3.76954°
| |
argument of perihelion ω: |
321.63°
| |
ascending node Ω: |
84.0325°
| |
mean anomaly M: |
55.32°
| |
perihelion passage TP: |
1968 Nov 27
| |
Epoch: |
2014 May 23
| |
data arc: |
2003-2011
(21 obs.)
| |
Earth MOID: |
41.5613 AU
| |
Jupiter Tisserand invariant TJ: |
5.942
|
| Neptune Tisserand invariant TN: | 3.10 [*D] |
orbital data, secondary:
|
semimajor axis as: |
1300
± 100 km
(separation)
[N08c]
| |
separation/primary radius as/rp: | 15 [*E] | |
separation/Hill radius as/rH: | 0.0023 [*E] | |
orbital period Ps: |
6.5
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
5.7
[MPC]
5.96 ± 0.64 [V14a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
<220
km [V14a]
| |
geometric albedo: |
>0.15
[V14a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
560000 km [*E]
|
other data, primary:
|
diameter dp: |
178
km [V14a]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
129
km [V14a]
| |
diameter ratio ds/dp: |
0.724
± 0.1
[N08c]
| |
component mag. difference ΔM: |
0.7
± 0.3
[N08c]
| |
rotation period RPs: |
?
| |
|
|
--
2003 WU188
--discovery and notes:
Primary discovered
2003 Nov 24
from
Kitt Peak Observatory, Arizona, USA
by
M. W. Buie.
Companion discovered
-
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Mar 14.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, Keith S., Grundy, William M., Chiang, Eugene I., Margot, Jean-Luc, & Kern, Susan D. 2007, ArXiv Astrophysics e-prints Binaries in the Kuiper Belt
- Pittichova, J., Meech, K. J., Wasserman, L. H., & Marsden, B. G. 2005, Minor Planet Electronic Circulars 2003 WU188
- Bosh, A. S., Wasserman, L. H., Chiang, E. I., Lovering, J. R., Buie, M. W., Millis, R. L., Qu, J. J., Clancy, K. B., Kern, S. D., & Marsden, B. G. 2004, Minor Planet Electronic Circulars 2003 WU188
©
2007-2008, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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