Asteroids with Satellites Database--Johnston's Archive
(17251)
Vondracek
compiled by Wm. Robert Johnston
last updated
21 Jun 2024
--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: |
2.28685374411 AU
| |
orbital period P: |
3.4583248673 yr
(= 1263.15315779 d)
| |
eccentricity e: |
0.16950781351
| |
perihelion distance q: |
1.8992141661 AU
| |
aphelion distance Q: |
2.67449332211 AU
| |
inclination i: |
7.0908753°
| |
argument of perihelion ω: |
141.96039566°
| |
ascending node Ω: |
131.47440768°
| |
mean anomaly M: |
313.75680382°
| |
perihelion passage TP: |
2024 Sep 09.2562202
| |
Epoch: |
2024 Mar 31
| |
data arc: |
1990-2024
(4603 obs.)
| |
Earth MOID: |
0.888446 AU
| |
Jupiter Tisserand invariant TJ: |
3.572
|
orbital data, secondary:
|
semimajor axis as: |
8.6
km
[*E]
| |
separation/primary radius as/rp: | 3.4 [*E] | |
separation/Hill radius as/rH: | 0.012 [*E] | |
orbital period Ps: |
0.6842
± 0.0004
d [B24g]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
14.08
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
5.2
± 0.03
km [M19a]
| |
geometric albedo: |
0.237
± 0.028
[M19a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
color index J-H: | 0.436 [S10b] | |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
740 km [*E]
|
other data, primary:
|
diameter dp: |
5.01
± 0.03
km [*D]
| |
rotation period RPp: |
3.7798
± 0.0003
h [B24g]
| |
amplitude in mag., rotational ΔM: |
0.13
[B24g]
| |
amplitude in mag., mutual events ΔM: | 0.08 [B24g] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>1.40
km [*D]
| |
diameter ratio ds/dp: |
>0.28
[B24g]
| |
component mag. difference ΔM: |
<2.8
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(17251) Vondracek
--discovery and notes:
Primary discovered
2000 Apr 07
from
Socorro, New Mexico, USA
by
Lincoln Laboratory Near-Earth Asteroid Research Team.
Alternate designation(s):
2000 GA127,
1990 SM10.
Linked to prediscovery observations from 1990 Sep 17.
Permanent number assigned 2000 Sep 13.
Named 2002 Feb 27 for Mark Vondracek [MPC044933].
Companion discovered
2024 Apr 12
by V. Benishek, P. Pravec, R. Durkee, D. Augustin, and J. Oey
using
lightcurve
observations from Sopot Observatory, Serbia; Shed of Science South Observatory, Pontotoc, Texas, USA; e-Eye Observatory, Spain; Blue Mountains Observatory, Leura, New South Wales, Australia.
Announced
2024 Jun 19 [B24g].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2024
by Wm. Robert Johnston.
Last modified
21 Jun 2024.
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