Asteroids with Satellites Database--Johnston's Archive
1999 OJ4
compiled by Wm. Robert Johnston
last updated
27 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:
TNO
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
38.1066 AU
| |
orbital period P: |
235.234 yr
(= 85920.7 d)
| |
eccentricity e: |
0.02379
| |
perihelion distance q: |
37.2002 AU
| |
aphelion distance Q: |
39.0129 AU
| |
inclination i: |
3.99543°
| |
argument of perihelion ω: |
285.6834°
| |
ascending node Ω: |
127.4445°
| |
mean anomaly M: |
294.6214°
| |
perihelion passage TP: |
2062 Jan 14.8
| |
Epoch: |
2019 Apr 27
| |
data arc: |
1999-2008
(63 obs.)
| |
Earth MOID: |
36.2133 AU
| |
Jupiter Tisserand invariant TJ: |
5.534
|
| Neptune Tisserand invariant TN: | 3.034 [*D] |
orbital data, secondary:
|
semimajor axis as: |
3306
± 17 km
[G19b]
| |
separation/primary radius as/rp: | 88.16 [*D] | |
separation/Hill radius as/rH: | 0.015 [*D] | |
orbital period Ps: |
84.1147
± 0.005
d [G19b]
| |
eccentricity es: |
0.3683
± 0.0038
[G19b]
| |
inclination is: | 53.61° ± 0.72° [G19b] | |
ascending node Ωs: | 276° ± 1.3° [G19b] | |
argument of pericenter ωs: | 330.2° ± 0.61° [G19b] | |
mean anomaly M: | 37.45° ± 0.9° [G19b] | |
Epoch: | 2006 Sep 21.5 | |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
7.1
[MPC]
7.344 ± 0.012 [G09a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
104
km [*D]
| |
geometric albedo: |
0.215
± 0.095/0.095
[G09a]
| |
color index U-B: |
?
| |
color index B-V: |
0.988
[P04a]
| |
color index V-R: | 0.682 ± 0.05 [P04a] | |
color index B-R: | 1.675 ± 0.077 [P04a] | |
color index V-I: | 1.2 [P04a] | |
taxonomic type: |
RR? (G-mode) [B05b]
| |
mass m: |
4.05x1017
± 6.3x1015
kg [G19b]
| |
density ρ: |
(1
± 1/0.5
g/cm3) [*A]
| |
Hill radius rH: |
230000 km [*D]
|
other data, primary:
|
diameter dp: |
75
± 17
km [G09a]
| |
color index V-I: | 1.25 ± 0.11 [B08d] | |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
72
± 16
km [*D]
| |
diameter ratio ds/dp: |
0.96
± 0.009
[G09a]
| |
component mag. difference ΔM: |
0.088
± 0.02
[G09a]
| |
color index V-I: | 1.37± 0.24 [B08d] | |
rotation period RPs: |
?
| |
|
|
--
1999 OJ4
--discovery and notes:
Primary discovered
1999 Jul 18
from
Mauna Kea Observatory, Hawaii, USA
by
?.
Companion discovered
2002 Oct 04
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2005 Oct 06.
--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
- Gladman, B., M, J., & Marsden, B. G. 2000, Minor Planet Electronic Circulars 1999 OJ4
- Marsden, B. G. 1999, Minor Planet Electronic Circulars SEVEN NEW
- Kavelaars, J. J., Gladman, B., Holman, M., Petit, J.-M., Scholl, H., Nicholson, P. D., Burns, J. A., & Marsden, B. G. 1999, Minor Planet Electronic Circulars SEVEN NEW
©
2005-2014, 2019
by Wm. Robert Johnston.
Last modified
27 May 2019.
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