Asteroids with Satellites Database--Johnston's Archive
(79472)
Chiorny
compiled by Wm. Robert Johnston
last updated
9 October 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, Hungaria
orbital data, primary (osculating elements)
[JPL]
:
semimajor axis a: |
1.9621797285 AU
|
orbital period P: |
2.748630614 yr (= 1003.9373316 d)
|
eccentricity e: |
0.080042539
|
perihelion distance q: |
1.805121882 AU
|
aphelion distance Q: |
2.119237575 AU
|
inclination i: |
24.34261181°
|
argument of perihelion ω: |
331.349174°
|
ascending node Ω: |
93.3235127°
|
mean anomaly M: |
241.208033°
|
perihelion passage TP: |
2022 May 28.276917
|
Epoch: |
2021 Jul 01
|
data arc: |
1993-2021
(1644 obs.)
|
Earth MOID: |
0.833588 AU
|
Jupiter Tisserand invariant TJ: |
3.767
|
orbital data, secondary:
semimajor axis as: |
7.7
km
[*E]
|
separation/primary radius as/rp: | 4.7 [*E] |
separation/Hill radius as/rH: | 0.016 [*E] |
orbital period Ps: |
1.081
± 0.0008
d [W12c]
|
eccentricity es: |
?
|
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
absolute mag. H: |
14.89
[MPC]
|
slope parameter G: |
(0.15) [*A]
|
effective diameter dE: |
3.47
km [*E]
|
geometric albedo: |
(0.16
) [*A]
|
color index U-B: |
?
|
color index B-V: |
?
|
taxonomic type: |
?
|
mass m: |
?
|
density ρ: |
(1.6
g/cm3) [*A]
|
Hill radius rH: |
470 km [*E]
|
other data, primary:
diameter dp: |
3.31
km [*E]
|
rotation period RPp: |
2.8802
± 0.0002
h [W12c]
|
amplitude in mag., rotational ΔM: |
0.21
± 0.02
[W12c]
|
amplitude in mag., mutual events ΔM: | 0.12 [W12c] |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
diameter ds: |
1.06
km [*E]
|
diameter ratio ds/dp: |
0.32
± 0.03
[W12c]
|
component mag. difference ΔM: |
2.47
± 0.20
[*D]
|
rotation period RPs: |
?
|
|
|
--
(79472) Chiorny
--discovery and notes:
Primary discovered
1998 Jan 06
from
Sormano, Italy
by
A. Testa and P. Chiavenna.
Alternate designation(s):
1998 AX4
.
Linked to prediscovery observations from 1993 Apr 26.
Permanent number assigned 2004 May 04.
Named 2016 Jun 20 for Vasilij G. Chiorny (1953-) [MPC100607].
Companion discovered
2012 Mar 17
by B. D. Warner
using
lightcurve
observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA.
Announced
2012 Oct [W12c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2012-2016, 2021
by Wm. Robert Johnston.
Last modified
9 October 2021.
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