Asteroids with Satellites Database--Johnston's Archive
2000 WT169
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: |
45.1211 AU
| |
orbital period P: |
303.094 yr
(= 110705.1 d)
| |
eccentricity e: |
0.00928
| |
perihelion distance q: |
44.702 AU
| |
aphelion distance Q: |
45.5397 AU
| |
inclination i: |
1.74288°
| |
argument of perihelion ω: |
257.26°
| |
ascending node Ω: |
110.519°
| |
mean anomaly M: |
75.52°
| |
perihelion passage TP: |
1950 Oct 22
| |
Epoch: |
2014 May 23
| |
data arc: |
2000-2010
(36 obs.)
| |
Earth MOID: |
43.7004 AU
| |
Jupiter Tisserand invariant TJ: |
6.002
|
| Neptune Tisserand invariant TN: | 3.12 [*D] |
orbital data, secondary:
|
semimajor axis as: |
2600
± 100 km
(separation)
[G12b]
| |
separation/primary radius as/rp: | 25 [*E] | |
separation/Hill radius as/rH: | 0.0037 [*E] | |
orbital period Ps: |
14
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
6.1
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
265
km [*E]
| |
geometric albedo: |
(0.09
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
710000 km [*E]
|
other data, primary:
|
diameter dp: |
205
km [*E]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
168
km [*E]
| |
diameter ratio ds/dp: |
0.82
[N09c]
| |
component mag. difference ΔM: |
0.43
[N09c]
| |
rotation period RPs: |
?
| |
|
|
--
2000 WT169
--discovery and notes:
Primary discovered
2000 Nov 23
from
Mauna Kea Observatory, Hawaii, USA
by
D. C. Jewitt, S. S. Sheppard, and Y. R. Fernandez.
Companion discovered
2008 Sep 24
by K. S. Noll, W. M. Grundy, S. D. Benecchi, and H. A. Levison
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2009 Sep 27 [N09c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, K. S., Grundy, W. M., Benecchi, S. D., & Levison, H. A. 2009, International Astronomical Union Circular 2000 WT_169 and 2003 YU_179
©
2009, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.