Asteroids with Satellites Database--Johnston's Archive
1998 WV24
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, plutino
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
39.123 AU
| |
orbital period P: |
244.710 yr
(= 89380.3 d)
| |
eccentricity e: |
0.03730
| |
perihelion distance q: |
37.6634 AU
| |
aphelion distance Q: |
40.582 AU
| |
inclination i: |
1.51775°
| |
argument of perihelion ω: |
164.70°
| |
ascending node Ω: |
183.682°
| |
mean anomaly M: |
74.83°
| |
perihelion passage TP: |
1963 Jul 11
| |
Epoch: |
2014 May 23
| |
data arc: |
1998-2008
(20 obs.)
| |
Earth MOID: |
36.6558 AU
| |
Jupiter Tisserand invariant TJ: |
5.611
|
| Neptune Tisserand invariant TN: | 3.05 [*D] |
orbital data, secondary:
|
semimajor axis as: |
1420
± 60 km
(separation)
[B08a]
| |
separation/primary radius as/rp: | 26 [*E] | |
separation/Hill radius as/rH: | 0.0043 [*E] | |
orbital period Ps: |
14
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
7.4
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
146
km [*E]
| |
geometric albedo: |
(0.09
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
0.77
[T00b]
| |
color index V-R: | 0.5 ± 0.03 [T00b] | |
color index B-R: | 1.27 ± 0.03 [T00b] | |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
330000 km [*E]
|
other data, primary:
|
diameter dp: |
110
km [*E]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
96
km [*E]
| |
diameter ratio ds/dp: |
0.871
[B08a]
| |
component mag. difference ΔM: |
0.3
[* D]
| |
rotation period RPs: |
?
| |
|
|
--
1998 WV24
--discovery and notes:
Primary discovered
1998 Nov 18
from
Kitt Peak Observatory, Arizona, USA
by
M. W. Buie.
Companion discovered
2007 Aug 27
by S. D. Benecchi, K. S. Noll, E. A. Barker, W. M. Grundy, and H. F. Levison
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2008 Oct 29 [B08a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Benecchi, S. D., Noll, K. S., Barker, E. A., Grundy, W. M., & Levison, H. F. 2008, International Astronomical Union Circular 1998 WV_24
- Romanishin, W., Tegler, S., Sheppard, S., & Marsden, B. G. 1999, Minor Planet Electronic Circulars 1998 WV24
- Millis, R. L., Buie, M. W., Wagner, R. M., Elliot, J. L., & Marsden, B. G. 1998, Minor Planet Electronic Circulars 1998 WV24
©
2008, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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