Asteroids with Satellites Database--Johnston's Archive
(357439)
2004 BL86
compiled by Wm. Robert Johnston
last updated
31 January 2015
--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, Apollo
(PHA)
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.5022021268 AU
| |
orbital period P: |
1.841164357 yr
(= 672.4979823 d)
| |
eccentricity e: |
0.403073161
| |
perihelion distance q: |
0.896704767 AU
| |
aphelion distance Q: |
2.107699486 AU
| |
inclination i: |
23.743614°
| |
argument of perihelion ω: |
311.254949°
| |
ascending node Ω: |
126.7203777°
| |
mean anomaly M: |
354.0330668°
| |
perihelion passage TP: |
2014 Dec 20.1465293
| |
Epoch: |
2014 Dec 09
| |
data arc: |
2004-2015
(243 obs.)
| |
Earth MOID: |
0.0081707 AU
| |
Jupiter Tisserand invariant TJ: |
4.364
|
orbital data, secondary:
|
semimajor axis as: |
0.5
km
(separation)
[J15a]
| |
separation/primary radius as/rp: | 3 [*D] | |
separation/Hill radius as/rH: | 0.022 [*E] | |
orbital period Ps: |
0.6
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
19
[MPC]
19.1 [B15a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
0.33
km [*D]
| |
geometric albedo: |
0.37
[*D]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
V (SMASSII) [P15a]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
22 km [*E]
|
other data, primary:
|
diameter dp: |
0.32
km [J15a]
| |
rotation period RPp: |
2.6
h [B15a]
| |
amplitude in mag., rotational ΔM: |
0.25
[B15a]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.07
km [J15a]
| |
diameter ratio ds/dp: |
0.21
[J15a]
| |
component mag. difference ΔM: |
3.4
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(357439) 2004 BL86
--discovery and notes:
Primary discovered
2004 Jan 30
from
Socorro, New Mexico, USA
by
LINEAR.
Permanent number assigned 2013 Mar 27.
Companion discovered
2015 Jan 26
using
radar
observations from Goldstone, California, USA.
Announced
2015 Jan 27 [C4063].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2015, 2014
by Wm. Robert Johnston.
Last modified
31 January 2015.
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