Asteroids with Satellites Database--Johnston's Archive
(72036)
2000 XM44
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: |
2.325124428 AU
| |
orbital period P: |
3.5454331282 yr
(= 1294.9939076 d)
| |
eccentricity e: |
0.275247432
| |
perihelion distance q: |
1.6851399 AU
| |
aphelion distance Q: |
2.965108955 AU
| |
inclination i: |
22.5948455°
| |
argument of perihelion ω: |
107.902475°
| |
ascending node Ω: |
32.552454°
| |
mean anomaly M: |
33.346796°
| |
perihelion passage TP: |
2018 Dec 28.044728
| |
Epoch: |
2019 Apr 27
| |
data arc: |
1955-2019
(1083 obs.)
| |
Earth MOID: |
0.816157 AU
| |
Jupiter Tisserand invariant TJ: |
3.425
|
orbital data, secondary:
|
semimajor axis as: |
4.9
km
[*E]
| |
separation/primary radius as/rp: | 3.7 [*E] | |
separation/Hill radius as/rH: | 0.014 [*E] | |
orbital period Ps: |
0.7822
± 0.0005
d [B19c]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
14.4
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
2.70
± 0.43
km [N16c]
| |
geometric albedo: |
0.422
± 0.180
[N16c]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
350 km [*E]
|
other data, primary:
|
diameter dp: |
2.62
km [*D]
| |
rotation period RPp: |
2.582
± 0.0002
h [B19c]
| |
amplitude in mag., rotational ΔM: |
0.12
[B19c]
| |
amplitude in mag., mutual events ΔM: | 0.085 ±0.015 [B19c] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>0.66
km [*D]
| |
diameter ratio ds/dp: |
>0.25
[B19c]
| |
component mag. difference ΔM: |
<3.0
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(72036) 2000 XM44
--discovery and notes:
Primary discovered
2000 Dec 09
from
Fountain Hills
by
C. W. Juels.
Linked to prediscovery observations from 1955 Jan 29.
Permanent number assigned 2003 Nov 09.
Companion discovered
2019 Mar 18
by V. Benishek, P. Pravec, H. Kucakova, K. Hornoch, P. Kusnirak, D. Pray, W. Cooney, J. Gross, D. Terrell
using
lightcurve
observations from Sopot Observatory, Serbia; Ondrejov Observatory, Czech Republic; Sugarloaf Mountain Observatory; Sonoita Research Observatory.
Announced
2019 May 29 [B19c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2019, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
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