Asteroids with Satellites Database--Johnston's Archive
(4765)
Wasserburg
compiled by Wm. Robert Johnston
last updated
21 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:
main belt asteroid, Hungaria
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.945408318 AU
| |
orbital period P: |
2.713465817 yr
(= 991.0933895 d)
| |
eccentricity e: |
0.060073422
| |
perihelion distance q: |
1.82854098 AU
| |
aphelion distance Q: |
2.062275652 AU
| |
inclination i: |
23.7120905°
| |
argument of perihelion ω: |
108.426002°
| |
ascending node Ω: |
76.570567°
| |
mean anomaly M: |
161.523822°
| |
perihelion passage TP: |
2013 Mar 04.3189
| |
Epoch: |
2014 May 23
| |
data arc: |
1983-2013
(708 obs.)
| |
Earth MOID: |
0.875406 AU
| |
Jupiter Tisserand invariant TJ: |
3.792
|
orbital data, secondary:
|
semimajor axis as: |
2.9
km
[*E]
| |
separation/primary radius as/rp: | 3.3 [*E] | |
separation/Hill radius as/rH: | 0.012 [*E] | |
orbital period Ps: |
0.6654
± 0.0008
d [W13i]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.7
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
1.78
± 0.48
km [M11b]
| |
geometric albedo: |
1
± 0.087
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
250 km [*E]
|
other data, primary:
|
diameter dp: |
1.76
± 0.48
km [*D]
| |
rotation period RPp: |
3.6231
± 0.0005
h [W13i]
| |
amplitude in mag., rotational ΔM: |
0.17
± 0.01
[W13i]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.28
± 0.08
km [*D]
| |
diameter ratio ds/dp: |
>0.16
± 0.02
[W13i]
| |
component mag. difference ΔM: |
<4.0
± 0.3
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(4765) Wasserburg
--discovery and notes:
Primary discovered
1986 May 05
from
Palomar Observatory, California, USA
by
C. S. Shoemaker.
Alternate designation(s):
1986 JN1,
1983 EA1, 1986 LF.
Linked to prediscovery observations from 1983 Mar 13.
Permanent number assigned 1991 Mar 30.
Named 1991 Jun 27 for Gerald J. Wasserburg (1927-) [MPC18464].
Companion discovered
2013 Apr 23
by B. D. Warner and R. D. Stephens
using
lightcurve
observations.
Announced
2013 Sep [W13i].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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