(452561) 2005 AB (original) (raw)
Asteroids with Satellites Database--Johnston's Archive
(452561) 2005 AB
compiled by Wm. Robert Johnston
last updated 31 December 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, Amor _orbital data, primary (osculating elements)_[JPL] :semimajor axis **a:**3.21736237 AUorbital period **P:**5.77109428 yr (= 2107.89219 d)eccentricity **e:**0.655379534perihelion distance **q:**1.108768919 AUaphelion distance **Q:**5.32595582 AUinclination **i:**8.1591426°argument of perihelion **ω:**63.668338°ascending node **Ω:**126.279736°mean anomaly **M:**210.127894°perihelion passage **TP:2016 Oct 16.5395Epoch:2014 May 23data arc:2005-2011 (1760 obs.)Earth MOID:**0.170002 AUJupiter Tisserand invariant **TJ:2.793 orbital data, secondary: binary dynamical type:**A [P07f]semimajor axis **as:**3.4 km [*E]separation/primary radius **as/rp:**3.6 [*E]separation/Hill radius **as/rH:**0.021 [*E]orbital period **Ps:**0.7471 ± 0.0004 d [R06b]eccentricity es:?normalized ang. mom. **αL:**0.81 [P07f] | other data, system (combined): absolute mag. **H:**17.5 [MPC]slope parameter G: (0.15) [*A]effective diameter dE:1.95 km [*D]geometric albedo:0.03 [K06b]color index U-B:?color index B-V:?taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**160 km [*E] other data, primary: diameter **dp:**>1.9 km [R06b]rotation period **RPp:**3.339 ± 0.002 h [R06b]amplitude in mag., rotational ΔM:?pole direction Β, λ:? , ? other data, secondary: diameter **ds:**0.46 km [*D]diameter ratio **ds/dp:**0.24 ± 0.02 [R06b]component mag. difference **ΔM:**3.1 ± 0.2 [*D]rotation period RPs:? |
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-- (452561) 2005 AB --discovery and notes:
Primary discovered 2005 Jan 01 from Catalina Station, Arizona, USA by Catalina Sky Survey. Permanent number assigned 25 December 2015.
Companion discovered 2005 Feb by V. Reddy, R. Dyvig, P. Pravec, and P. Kusnirak using lightcurve observations from University of North Dakota, Grand Forks, North Dakota, USA; Badlands Observatory, Quinn, South Dakota, USA; Ondrejov Observatory, Czech Republic. Announced 2005 Feb 11 [R05b].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Reddy, V., Dyvig, R. R., Pravec, P., Kusnirak, P., Kornos, L., Vilagi, J., Galad, A., Gajdos, S., Pray, D. P., Benner, L. A. M., Nolan, M. C., Giorgini, J. D., Ostro, S. J., & Abell, P. A. 2006, 37th Annual Lunar and Planetary Science Conference Photometric and Radar Observations of 2005 AB: A New Binary Near-Earth Asteroid
- Kumar, S., Hardersen, P. S., & Gaffey, M. J. 2006, 37th Annual Lunar and Planetary Science Conference Albedo Estimates and Near-Infrared Reflectance Spectroscopy of Near Earth Asteroids 1999 HF1 and 2005 AB
- Pravec, P. 2005, Society for Astronomical Sciences Annual Symposium Photometric Survey for Asynchronous Binary Asteroids
- Reddy, V., Dyvig, R., Pravec, P., & Kusnirak, P. 2005, International Astronomical Union Circular 2005 AB
- Lopez, A., Pacheco, R., Forteza, J., Christensen, E. J., Beshore, E. C., Casey, C. M., Garradd, G. J., Hill, R. E., Larson, S. M., McNaught, R. H., Gomez, J. J., Sue, J., Lacruz, J., Birtwhistle, P., & Smalley, K. E. 2005, Minor Planet Electronic Circulars 2005 AB
© 2005-2014, 2015 by Wm. Robert Johnston.
Last modified 31 December 2015.
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