Asteroids with Satellites Database--Johnston's Archive
(1830)
Pogson
compiled by Wm. Robert Johnston
last updated
21 September 2014
--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
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.188591450 AU
| |
orbital period P: |
3.237838999 yr
(= 1182.6206940 d)
| |
eccentricity e: |
0.055932424
| |
perihelion distance q: |
2.06617823 AU
| |
aphelion distance Q: |
2.311004674 AU
| |
inclination i: |
3.9542790°
| |
argument of perihelion ω: |
335.241532°
| |
ascending node Ω: |
147.472576°
| |
mean anomaly M: |
154.675622°
| |
perihelion passage TP: |
2012 Dec 30.8816
| |
Epoch: |
2014 May 23
| |
data arc: |
1926-2013
(1936 obs.)
| |
Earth MOID: |
1.08224 AU
| |
Jupiter Tisserand invariant TJ: |
3.669
|
orbital data, secondary:
|
binary dynamical type: | A [M09a] | |
semimajor axis as: |
18
km
[*E]
| |
separation/primary radius as/rp: | 4.6 [*E] | |
separation/Hill radius as/rH: | 0.014 [*E] | |
orbital period Ps: |
1.01
± 0.0002
d [H07d]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
1.2
[M09a]
|
|
other data, system (combined):
|
absolute mag. H: |
12.45
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
8.28
± 0.12
km [M11b]
| |
geometric albedo: |
0.236
± 0.04
[M11b]
| |
color index U-B: |
0.5
[JPL]
| |
color index B-V: |
0.91
[JPL]
| |
taxonomic type: |
S (SMASSII) [JPL]
S (Tholen) [JPL]
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
1300 km [*E]
|
other data, primary:
|
diameter dp: |
7.89
± 0.11
km [*D]
| |
rotation period RPp: |
2.57
± 0.000
h [H07d]
| |
amplitude in mag., rotational ΔM: |
0.12
[H07d]
| |
amplitude in mag., mutual events ΔM: | 0.15 ±0.07 [H07d] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
2.52
km [*D]
| |
diameter ratio ds/dp: |
>0.32
[H07d]
| |
component mag. difference ΔM: |
<2.5
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(1830) Pogson
--discovery and notes:
Primary discovered
1968 Apr 17
from
Zimmerwald, Switzerland
by
P. Wild.
Alternate designation(s):
1968 HA,
1926 GW, 1929 EE, 1942 EC1, 1945 BB, 1953 RE1, 1955 FX, 1955 GE, 1961 AC, 1969 QM, 1971 BJ, 1972 NA1, 1972 OC, 1972 OD.
Linked to prediscovery observations from 1926 Apr 14.
Permanent number assigned -.
Named - for Norman Robert Pogson (1829-1891) [MPC4236].
Companion discovered
2007 Apr 18
by D. Higgins, P. Pravec P. Kusnirak, J. Oey, and D. Pray
using
lightcurve
observations from Canberra, Australia; Ondrejov Observatory, Czech Republic; Leura, New South Wales, Australia; Carbuncle Hill Observatory, Greene, Rhode Island, USA.
Announced
2007 May 10 [H07d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Higgins, D., Pravec, P., Kusnirak, P., Oey, J., & Pray, D. 2007, Central Bureau Electronic Telegrams (1830) Pogson
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System 1830 Pogson CCD Spectrum
©
2007-2009, 2014
by Wm. Robert Johnston.
Last modified
21 September 2014.
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