Asteroids with Satellites Database--Johnston's Archive
(5905)
Johnson
compiled by Wm. Robert Johnston
last updated
29 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:
main belt asteroid, Hungaria
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.910207673 AU
| |
orbital period P: |
2.640152907 yr
(= 964.3158492 d)
| |
eccentricity e: |
0.071733727
| |
perihelion distance q: |
1.773181357 AU
| |
aphelion distance Q: |
2.04723399 AU
| |
inclination i: |
27.52317451°
| |
argument of perihelion ω: |
208.6065649°
| |
ascending node Ω: |
141.2848475°
| |
mean anomaly M: |
11.72164002°
| |
perihelion passage TP: |
2014 Apr 21.60176
| |
Epoch: |
2014 May 23
| |
data arc: |
1989-2013
(1274 obs.)
| |
Earth MOID: |
0.772264 AU
| |
Jupiter Tisserand invariant TJ: |
3.796
|
orbital data, secondary:
|
binary dynamical type: | A [P07f] | |
semimajor axis as: |
9.3
km
[*E]
| |
separation/primary radius as/rp: | 4.2 [*E] | |
separation/Hill radius as/rH: | 0.015 [*E] | |
orbital period Ps: |
0.9077
± 0.00002
d [W05b]
| |
eccentricity es: |
<0.06
[P16d]
| |
normalized ang. mom. αL: |
0.9
[P07f]
|
|
other data, system (combined):
|
absolute mag. H: |
14
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
4.79
± 0.07
km [M11b]
| |
geometric albedo: |
0.194
± 0.028
[M11b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
630 km [*E]
|
other data, primary:
|
diameter dp: |
4.45
± 0.1
km [W05b]
| |
rotation period RPp: |
3.7824
± 0.0002
h [W05b]
| |
amplitude in mag., rotational ΔM: |
0.11
[W05b]
| |
amplitude in mag., mutual events ΔM: | 0.165 ±0.015 [W05f] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
1.78
± 0.18
km [*D]
| |
diameter ratio ds/dp: |
0.4
± 0.04
[W05b]
| |
component mag. difference ΔM: |
1.99
± 0.22
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(5905) Johnson
--discovery and notes:
Primary discovered
1989 Feb 11
from
Palomar Observatory, California, USA
by
E. F. Helin.
Alternate designation(s):
1989 CJ1
.
Permanent number assigned 1994 Jun 23.
Named 1996 May 03 for Lindley N. Johnson [MPC027128].
Companion discovered
2005 Apr 01
by B. Warner, P. Pravec, P. Kusnirak, D. Pray, A. Galad, S. Gajdos, P. Brown, and Z. Krzeminski
using
lightcurve
observations from Colorado Springs, Colorado, USA; Ondrejov Observatory, Czech Republic; Conventry, Rhode Island, USA; Modra Observatory, Slovakia; University of Western Ontario, Ontario, Canada.
Announced
2005 Apr 13 [W05f].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, Brian D., Harris, Alan W., Pravec, Petr, Cooney, Walter R., Jr., Gross, John, Terrell, Dirk, Oey, Julian, Vilagi, Josef, Gajdos, Stefan, Brinsfield, James W., Pollock, Joseph, Reichart, Daneil, Ivarsen, Kevin, Haislip, Josh, Lacluyze, Aaron, Nysewander, Melissa, Marchis, Franck, & Baek, Minjin 2009, Minor Planet Bulletin 5905 Johnson: A Hungaria Binary
- Warner, B., Pravec, P., Kusnirak, P., Pray, D., Galad, A., Gajdos, S., Brown, P., & Krzeminski, Z. 2005, International Astronomical Union Circular (5905) Johnson
©
2005-2014, 2019
by Wm. Robert Johnston.
Last modified
29 May 2019.
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