Asteroids with Satellites Database--Johnston's Archive
(5135)
Nibutani
compiled by Wm. Robert Johnston
last updated
30 April 2022
--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
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.2390454431 AU
| |
orbital period P: |
3.3503822719 yr
(= 1223.7502369 d)
| |
eccentricity e: |
0.128332499
| |
perihelion distance q: |
1.951703146 AU
| |
aphelion distance Q: |
2.52638774 AU
| |
inclination i: |
3.3051849°
| |
argument of perihelion ω: |
229.892085°
| |
ascending node Ω: |
35.458319°
| |
mean anomaly M: |
47.947127°
| |
perihelion passage TP: |
2019 Dec 20.013033
| |
Epoch: |
2020 May 31
| |
data arc: |
1969-2020
(2833 obs.)
| |
Earth MOID: |
0.937965 AU
| |
Jupiter Tisserand invariant TJ: |
3.623
|
orbital data, secondary:
|
semimajor axis as: |
9.6
km
[*E]
| |
separation/primary radius as/rp: | 4.14 [*E] | |
separation/Hill radius as/rH: | 0.014 [*E] | |
orbital period Ps: |
0.9057
± 0.0002
d [C20**]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.5
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
4.82
± 0.15
km [M11b]
| |
geometric albedo: |
0.527
± 0.155
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
710 km [*E]
|
other data, primary:
|
diameter dp: |
4.64
± 0.15
km [*D]
| |
rotation period RPp: |
2.818
± 0.00006
h [C20**]
| |
amplitude in mag., rotational ΔM: |
0.19
[C20**]
| |
amplitude in mag., mutual events ΔM: | 0.12 ±0.04 [C20**] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.3
± 0.1
km [*D]
| |
diameter ratio ds/dp: |
0.28
± 0.02
[C20**]
| |
component mag. difference ΔM: |
2.76
± 0.16
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(5135) Nibutani
--discovery and notes:
Primary discovered
1990 Oct 16
from
Kushiro, Japan
by
S. Ueda and H. Kaneda.
Alternate designation(s):
1990 UE,
1969 JG, 1982 DE, 1989 GV7.
Linked to prediscovery observations from 1969 May 05.
Permanent number assigned 1992 Mar 18.
Named 1996 Dec 24 for a valley in Hokkaido, Japan [MPC028621].
Companion discovered
2020 Sep
using
lightcurve
observations.
Announced
2020 Oct 29.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2020, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022
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