Asteroids with Satellites Database--Johnston's Archive
(54697)
2001 FA70
compiled by Wm. Robert Johnston
last updated
27 May 2019
--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:
Mars crossing asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.383011875 AU
| |
orbital period P: |
3.678657118 yr
(= 1343.654889 d)
| |
eccentricity e: |
0.331344919
| |
perihelion distance q: |
1.593413 AU
| |
aphelion distance Q: |
3.172610751 AU
| |
inclination i: |
13.0902187°
| |
argument of perihelion ω: |
129.347018°
| |
ascending node Ω: |
168.479546°
| |
mean anomaly M: |
101.5919233°
| |
perihelion passage TP: |
2016 Aug 20.820877
| |
Epoch: |
2017 Sep 04
| |
data arc: |
1997-2016
(842 obs.)
| |
Earth MOID: |
0.61412 AU
| |
Jupiter Tisserand invariant TJ: |
3.427
|
orbital data, secondary:
|
semimajor axis as: |
5.8
km
[*E]
| |
orbital period Ps: |
0.6777
± 0.0003
d [W16#]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
15
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
3.46
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: |
420 km [*E]
|
other data, primary:
|
diameter dp: |
3.4
km [*E]
| |
rotation period RPp: |
2.7077
± 0.0003
h [W16#]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.65
km [*E]
| |
diameter ratio ds/dp: |
>0.19
± 0.02
[W16#]
| |
component mag. difference ΔM: |
<3.61
± 0.23
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(54697) 2001 FA70
--discovery and notes:
Primary discovered
2001 Mar 19
from
Socorro, New Mexico, USA
by
LINEAR Program.
Linked to prediscovery observations from 1997 Mar 15.
Permanent number assigned 2003 Feb 16.
Companion discovered
2016 Jun 17
by B. D. Warner
using
lightcurve
observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA.
Announced
2016 Sep [W16#].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2017, 2019
by Wm. Robert Johnston.
Last modified
27 May 2019.
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