Asteroids with Satellites Database--Johnston's Archive
2004 PB108
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: |
45.025 AU
| |
orbital period P: |
302.126 yr
(= 110351.5 d)
| |
eccentricity e: |
0.10982
| |
perihelion distance q: |
40.080 AU
| |
aphelion distance Q: |
49.970 AU
| |
inclination i: |
20.2373°
| |
argument of perihelion ω: |
274.60°
| |
ascending node Ω: |
147.4823°
| |
mean anomaly M: |
303.132°
| |
perihelion passage TP: |
2062 Feb 12
| |
Epoch: |
2014 May 23
| |
data arc: |
2004-2009
(42 obs.)
| |
Earth MOID: |
39.1546 AU
| |
Jupiter Tisserand invariant TJ: |
5.602
|
| Neptune Tisserand invariant TN: | 2.95 [*D] |
orbital data, secondary:
|
semimajor axis as: |
10400
± 84 km
[G11a]
| |
separation/primary radius as/rp: | 86 [*D] | |
separation/Hill radius as/rH: | 0.015 [*D] | |
orbital period Ps: |
97.02
± 0.0075
d [G11a]
| |
eccentricity es: |
0.438
± 0.003
[G11a]
| |
inclination is: | 106.55° ± 0.99° [G09a] | |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
6.6
[MPC]
7.083 ± 0.016 [G09a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
277
km [*D]
| |
geometric albedo: |
0.035
± 0.015
[G11a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
9.47x1018
± 2.3x1017
kg [G11a]
| |
density ρ: |
(1
± 1/0.5
g/cm3) [*A]
| |
Hill radius rH: |
700000 km [*D]
|
other data, primary:
|
diameter dp: |
243
± 57/57
km [G11a]
| |
color index V-I: | 1.12 ± 0.07 [B08d] | |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
132
± 31
km [*D]
| |
diameter ratio ds/dp: |
0.544
± 0.008
[G09a]
| |
component mag. difference ΔM: |
1.321
± 0.032
[G09a]
| |
color index V-I: | 1.16± 0.13 [B08d] | |
rotation period RPs: |
?
| |
|
|
--
2004 PB108
--discovery and notes:
Primary discovered
2004 Aug 14
from
Cerro Tololo Observatory, La Serena, Chile
by
M. W. Buie.
Companion discovered
2006 Aug 04
by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. Stephens
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Mar 03 [N07d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Grundy, W. M., Noll, K. S., Buie, M. W., Benecchi, S. D., Stephens, D. C., & Levison, H. F. 2009, Icarus Mutual orbits and masses of six transneptunian binaries
- Noll, K. S., Grundy, W. M., Kern, S. D., Levison, H. F., & Stephens, D. C. 2007, International Astronomical Union Circular 2004 PB_108 and (60621) 2000 FE_8
©
2007-2008, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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