Asteroids with Satellites Database--Johnston's Archive
(3548)
Eurybates
and Queta
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:
Jupiter trojan asteroid, L4
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
5.19424164 AU
| |
orbital period P: |
11.838133235 yr
(= 4323.959834 d)
| |
eccentricity e: |
0.088827829
| |
perihelion distance q: |
4.73284843 AU
| |
aphelion distance Q: |
5.65563485 AU
| |
inclination i: |
8.05906926°
| |
argument of perihelion ω: |
27.4983765°
| |
ascending node Ω: |
43.53792846°
| |
mean anomaly M: |
270.9907398°
| |
perihelion passage TP: |
2022 Mar 31.090183
| |
Epoch: |
2019 Apr 27
| |
data arc: |
1997-2019
(2609 obs.)
| |
Earth MOID: |
3.74939 AU
| |
Jupiter Tisserand invariant TJ: |
2.972
|
orbital data, secondary:
|
semimajor axis as: |
2000
± 300 km
(separation)
[N20a]
| |
separation/primary radius as/rp: | 63 [*E] | |
separation/Hill radius as/rH: | 0.091 [*E] | |
orbital period Ps: |
55
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
9.8
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
63.88
± 0.30
km [G12d]
| |
geometric albedo: |
0.052
± 0.007
[G12d]
| |
color index U-B: |
?
| |
color index B-V: |
0.677
[H12d]
| |
color index V-R: | 0.352 ± 0.045 [H12d] | |
color index V-I: | 0.691 ± 0.05 [H12d] | |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
22000 km [*E]
|
other data, primary:
|
diameter dp: |
63.88
± 0.3
km [G12d]
| |
rotation period RPp: |
8.711
± 0.009
h [JPL]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.8
± 0.2
km [N20a]
| |
diameter ratio ds/dp: |
0.013
[*D]
| |
component mag. difference ΔM: |
>9.4
[H20a]
| |
rotation period RPs: |
?
| |
|
|
--
(3548) Eurybates and Queta
--discovery and notes:
Primary discovered
1973 Sep 19
from
Palomar Observatory, California, USA
by
C. J. Van Houten, I. Van Houten-Groenveld, and T. Gehrels.
Alternate designation(s):
1973 SO,
1954 CB, 1957 JX, 1978 EE5, 1985 TZ.
Linked to prediscovery observations from 1954.
Permanent number assigned 1987 Feb 13.
Named 1991 Apr 28 for the Greek army herald [MPC018138].
Companion discovered
2018 Sep 12
by K. S. Noll, M. E. Brown, H. A. Weaver, W. M. Grundy, H. F. Levison, C. Olkin, S. B. Porter, M. W. Buie, J. R. Spencer, S. Marchi, and T. Statler
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2020 Jan 09 [N20a].
Provisional designation S/2018 (3548) 1.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2020, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.