Asteroids with Satellites Database--Johnston's Archive
(348400)
2005 JF21
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:
NEA, Amor
(PHA)
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.2252428767 AU
| |
orbital period P: |
3.319512677 yr
(= 1212.4520051 d)
| |
eccentricity e: |
0.53565242
| |
perihelion distance q: |
1.033286144 AU
| |
aphelion distance Q: |
3.4171996097 AU
| |
inclination i: |
10.8486947°
| |
argument of perihelion ω: |
206.110524°
| |
ascending node Ω: |
132.1987536°
| |
mean anomaly M: |
272.7592467°
| |
perihelion passage TP: |
2022 Apr 20.8200731
| |
Epoch: |
2021 Jul 01
| |
data arc: |
2002-2021
(1202 obs.)
| |
Earth MOID: |
0.0464717 AU
| |
Jupiter Tisserand invariant TJ: |
3.423
|
orbital data, secondary:
|
semimajor axis as: |
0.97
km
[*E]
| |
separation/primary radius as/rp: | 3.2 [*E] | |
separation/Hill radius as/rH: | 0.020 [*E] | |
orbital period Ps: |
0.6158
± 0.0004
d [S16a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
17.28
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.62
± 0.41/0.17
km [N21c]
| |
geometric albedo: |
0.387
± 0.375/0.25
[N21c]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
V (SMASSII) [P19b]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
49 km [*E]
|
other data, primary:
|
diameter dp: |
0.61
± 0.40/0.17
km [*D]
| |
rotation period RPp: |
2.4144
h [W17a]
| |
amplitude in mag., rotational ΔM: |
0.06
[W17a]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.12
± 0.05
km [*D]
| |
diameter ratio ds/dp: |
>0.19
± 0.02
[S16a]
| |
component mag. difference ΔM: |
<3.61
± 0.23
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(348400) 2005 JF21
--discovery and notes:
Primary discovered
2005 May 04
from
Kitt Peak Observatory, Arizona, USA
by
Spacewatch Program.
Alternate designation(s):
2005 JU67.
Linked to prediscovery observations from 2002 Nov 19.
Permanent number assigned 2012 Dec 28.
Companion discovered
2015 Aug
using
radar
observations from Goldstone Observatory, California, USA.
Announced
2015 Aug 22.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2015-2017, 2021
by Wm. Robert Johnston.
Last modified
9 October 2021.
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