Asteroids with Satellites Database--Johnston's Archive
(5426)
Sharp
compiled by Wm. Robert Johnston
last updated
9 October 2021
--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, inner
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.9550247279 AU
| |
orbital period P: |
2.733610189 yr
(= 998.4511217 d)
| |
eccentricity e: |
0.11656562
| |
perihelion distance q: |
1.727136059 AU
| |
aphelion distance Q: |
2.1829133971 AU
| |
inclination i: |
23.79822738°
| |
argument of perihelion ω: |
67.3917973°
| |
ascending node Ω: |
88.1698003°
| |
mean anomaly M: |
103.0700876°
| |
perihelion passage TP: |
2020 Sep 18.137654
| |
Epoch: |
2021 Jul 01
| |
data arc: |
1985-2021
(1958 obs.)
| |
Earth MOID: |
0.824181 AU
| |
Jupiter Tisserand invariant TJ: |
3.776
|
orbital data, secondary:
|
semimajor axis as: |
4.4
km
[*E]
| |
separation/primary radius as/rp: | 4.5 [*E] | |
separation/Hill radius as/rH: | 0.017 [*E] | |
orbital period Ps: |
1.0092
± 0.0008
d [W15j]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
14.06
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
2.03
± 0.34
km [M11b]
| |
geometric albedo: |
1
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
270 km [*E]
|
other data, primary:
|
diameter dp: |
1.97
± 0.33
km [*E]
| |
rotation period RPp: |
4.5609
± 0.0001
h [W15j]
| |
amplitude in mag., rotational ΔM: |
0.18
± 0.01
[W15j]
| |
amplitude in mag., mutual events ΔM: | 0.08 ±0.01 [W15j] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>0.49
km [*E]
| |
diameter ratio ds/dp: |
>0.25
[*E]
| |
component mag. difference ΔM: |
<3.01
[*E]
| |
rotation period RPs: |
24.22
± 0.02
h [W15j]
| |
|
|
--
(5426) Sharp
--discovery and notes:
Primary discovered
1985 Feb 16
from
Palomar Observatory, California, USA
by
C. S. Shoemaker.
Alternate designation(s):
1985 DD
.
Permanent number assigned 1993 Feb 06.
Named 1995 Mar 17 for Robert P. Sharp (1911-2004) [MPC024917].
Companion discovered
2014 Dec 29
by B. D. Warner, V. Benishek, and A. Ferrero
using
lightcurve
observations from Palmer Divide Station, Eaton, Colorado, USA; Belgrade Astronomical Observatory, Belgrade, Serbia; Bigmuskie Observatory, Mombercelli, Astri, Italy.
Announced
2015 Jun [W15j].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2015, 2021
by Wm. Robert Johnston.
Last modified
9 October 2021.
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