(1830)
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 AUorbital period **P:**3.237838999 yr (= 1182.6206940 d)eccentricity **e:**0.055932424perihelion distance **q:**2.06617823 AUaphelion distance **Q:**2.311004674 AUinclination **i:**3.9542790°argument of perihelion **ω:**335.241532°ascending node **Ω:**147.472576°mean anomaly **M:**154.675622°perihelion passage **TP:2012 Dec 30.8816Epoch:2014 May 23data arc:1926-2013 (1936 obs.)Earth MOID:**1.08224 AUJupiter 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:? |
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-- (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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