Asteroids with Satellites Database--Johnston's Archive
(5482)
Korankei
compiled by Wm. Robert Johnston
last updated
27 May 2026
--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: |
2.52427859201 AU
| |
orbital period P: |
4.0106441329 yr (= 1464.88776955 d)
| |
eccentricity e: |
0.18766633937
| |
perihelion distance q: |
2.05055646909 AU
| |
aphelion distance Q: |
2.99800071493 AU
| |
inclination i: |
4.362406908°
| |
argument of perihelion ω: |
298.55558821°
| |
ascending node Ω: |
302.51684851°
| |
mean anomaly M: |
277.31863837°
| |
perihelion passage TP: |
2026 Oct 23.4414317
| |
Epoch: |
2025 Nov 21
| |
data arc: |
1984-2026
(4932 obs.)
| |
Earth MOID: |
1.04065 AU
| |
Jupiter Tisserand invariant TJ: |
3.426
|
orbital data, secondary:
|
semimajor axis as: |
12
km
[*E]
| |
separation/primary radius as/rp: | 4.5 [*E] | |
separation/Hill radius as/rH: | 0.013 [*E] | |
orbital period Ps: |
0.9212
± 0.0004
d [B26c]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.42
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
5.69
± 0.04
km [M19a]
| |
geometric albedo: |
0.364
± 0.09
[M19a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
Sa (SMASSII) [B02e]
| |
mass m: |
?
| |
density ρ: |
(2
g/cm3) [*A]
| |
Hill radius rH: |
930 km [*E]
|
other data, primary:
|
diameter dp: |
5.35
± 0.04
km [*D]
| |
dimensions : | ~5.8 x ~4.9 km [*E] | |
axial ratios a/b, b/c: | 1.2, ? [*E] | |
rotation period RPp: |
3.38507
± 0.00009
h [B26c]
| |
amplitude in mag., rotational ΔM: |
0.19
[B26c]
| |
amplitude in mag., mutual events ΔM: | 0.13 [B26c] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>1.93
km [*D]
| |
diameter ratio ds/dp: |
>0.36
[B26c]
| |
component mag. difference ΔM: |
>2.22
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(5482) Korankei
--discovery and notes:
Primary discovered
1990 Feb 27
from
Toyota, Japan
by
K. Suzuki and T. Urata.
Alternate designation(s):
1990 DX,
1984 WO3, 1986 EY1, 1987 SB23.
Linked to prediscovery observations from 1984 Nov 27.
Permanent number assigned 1993 Mar 08.
Named 2012 Feb 07 for the town in Aichi, Japan [MPC078269].
Companion discovered
2026 Mar 07
by V. Benishek and P. Pravec
using
lightcurve
observations from Sopot Observatory, Serbia.
Announced
2026 May 26 [B26c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2026
by Wm. Robert Johnston.
Last modified
27 May 2026.
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