Asteroids with Satellites Database--Johnston's Archive
(2680)
Mateo
compiled by Wm. Robert Johnston
last updated
8 February 2025
--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: |
2.40365109534 AU
| |
orbital period P: |
3.7266219991 yr
(= 1361.14868516 d)
| |
eccentricity e: |
0.21428578224
| |
perihelion distance q: |
1.8885828402 AU
| |
aphelion distance Q: |
2.9187193505 AU
| |
inclination i: |
2.432260328°
| |
argument of perihelion ω: |
336.93361886°
| |
ascending node Ω: |
2.95714379°
| |
mean anomaly M: |
38.44814063°
| |
perihelion passage TP: |
2024 May 24.6287887
| |
Epoch: |
2024 Oct 17
| |
data arc: |
1950-2024
(4794 obs.)
| |
Earth MOID: |
0.879941 AU
| |
Jupiter Tisserand invariant TJ: |
3.491
|
orbital data, secondary:
|
semimajor axis as: |
23
km
[*E]
| |
separation/primary radius as/rp: | 7.6 [*E] | |
separation/Hill radius as/rH: | 0.025 [*E] | |
orbital period Ps: |
2.2167
± 0.0008
d [D25a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.15
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
6.48
± 0.11
km [M14c]
| |
geometric albedo: |
0.265
± 0.039
[M14c]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
color index J-H: | 0.290 ± 0.116 [S10b] | |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
910 km [*E]
|
other data, primary:
|
diameter dp: |
6.08
± 0.10
km [*D]
| |
axial ratios a/b, b/c: | 1.1, ? [*E] | |
rotation period RPp: |
3.31306
± 0.00008
h [D25a]
| |
amplitude in mag., rotational ΔM: |
0.11
[D25a]
| |
amplitude in mag., mutual events ΔM: | 0.14 [D25a] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>2.25
km [*D]
| |
diameter ratio ds/dp: |
>0.37
[D25a]
| |
component mag. difference ΔM: |
<2.16
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(2680) Mateo
--discovery and notes:
Primary discovered
1975 Jul 01
from
El Leoncito, San Juan, Argentina
by
Felix Aguilar Observatory.
Alternate designation(s):
1975 NF,
1953 RF, 1953 TA2, 1979 ON13.
Linked to prediscovery observations from 1950 Dec 09.
Permanent number assigned 1982 Jul 06.
Named 1988 Sep 25 for Jose Mateo (1914-1978) [MPC013608].
Companion discovered
2024 Oct 22
by R. Durkee, P. Pravec, V. Benishek, A. Marchini, R. Papini, D. Pray, and J. Oey
using
lightcurve
observations from Shed of Science South Observatory, Pontotoc, Texas, USA; Sopot Observatory, Serbia; Astronomical Observatory of the University of Siena, Italy; Sugarloaf Mountain Observatory, South Deerfield, Massachusetts, USA; Blue Mountains Observatory, Leura, New South Wales, Australia.
Announced
2025 Jan 08 [D25a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2025
by Wm. Robert Johnston.
Last modified
8 February 2025.
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