Asteroids with Satellites Database--Johnston's Archive
(1526)
Mikkeli
compiled by Wm. Robert Johnston
last updated
14 February 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
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.3152029464 AU
| |
orbital period P: |
3.522764407 yr
(= 1286.7140009 d)
| |
eccentricity e: |
0.186624853
| |
perihelion distance q: |
1.883128538 AU
| |
aphelion distance Q: |
2.7472773549 AU
| |
inclination i: |
6.2062324°
| |
argument of perihelion ω: |
72.844513°
| |
ascending node Ω: |
336.880278°
| |
mean anomaly M: |
301.5751721°
| |
perihelion passage TP: |
2020 Dec 25.822345
| |
Epoch: |
2020 May 31
| |
data arc: |
1953-2020
(2314 obs.)
| |
Earth MOID: |
0.904151 AU
| |
Jupiter Tisserand invariant TJ: |
2.66
|
orbital data, secondary:
|
semimajor axis as: |
8.8
km
[*E]
| |
separation/primary radius as/rp: | 3.4 [*E] | |
separation/Hill radius as/rH: | 0.011 [*E] | |
orbital period Ps: |
0.6658
± 0.0004
d [B21a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.2
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
5.32
± 0.16
km [M**]
| |
geometric albedo: |
0.328
± 0.037
[M**]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
770 km [*E]
|
other data, primary:
|
diameter dp: |
5.22
± 0.16
km [*D]
| |
rotation period RPp: |
2.9341
± 0.0001
h [B21a]
| |
amplitude in mag., rotational ΔM: |
0.23
[B21a]
| |
amplitude in mag., mutual events ΔM: | 0.055 ±0.015 [B21a] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.04
± 0.11
km [*D]
| |
diameter ratio ds/dp: |
0.2
± 0.02
[B21a]
| |
component mag. difference ΔM: |
3.49
± 0.22
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(1526) Mikkeli
--discovery and notes:
Primary discovered
1939 Oct 07
from
Turku, Finland
by
Y. Vaisala.
Alternate designation(s):
1939 TF,
1953 TK2.
Permanent number assigned 1941 Aug 05.
Named 1976 Feb 20 for the town of Mikkeli, Finland [MPC003929].
Companion discovered
2020 Oct 09
by V. Benishek, P. Pravec, M. Husarik, T. Michalak, D. Pay, R. Goncalves, J. Oey, P. Bacci, and M. Maestripieri
using
lightcurve
observations from Sopot Observatory, Serbia; Skalnate Pleso Observatory; Sugarloaf Mountain Observatory; Linhaceria Observatory; Blue Mountains Observatory; San Marcello Pistoiese Observatory.
Announced
2021 Jan 28 [B21a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2021
by Wm. Robert Johnston.
Last modified
14 February 2021.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.