• Source: 3169 Ostro

3169 Ostro, provisional designation 1981 LA, is a Hungaria family asteroid from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter.
The asteroid was discovered on 4 June 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, and named after planetary scientist Steven J. Ostro at JPL.




Orbit and classification


Ostro is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.8–2.0 AU once every 2 years and 7 months (950 days). Its orbit has an eccentricity of 0.07 and an inclination of 25° with respect to the ecliptic.




Physical characteristics


In the Tholen and SMASS taxonomy, Ostro is classified as a TS-type and Xe-type asteroid, respectively. It has also been characterized as an E-type asteroid.
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ostro measures 4.662 kilometers in diameter and its surface has an outstandingly high albedo of 0.960. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.5152 and a diameter of 5.27 kilometers with an absolute magnitude of 12.73.
In May 2012, a rotational lightcurve of Ostro was obtained from photometric observations by American astronomer Brian Warner. Lightcurve analysis gave a well-defined rotation period of 6.503 hours with a brightness amplitude of 0.79 magnitude (U=3).




Naming


This minor planet was named after American planetary scientist Steven J. Ostro at the Jet Propulsion Laboratory of the California Institute of Technology. The approved naming citation was published by the Minor Planet Center on 14 April 1987 (M.P.C. 11749).




References






External links


Lightcurve plot of 3169 Ostro, Palmer Divide Observatory, B. D. Warner (2012)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
3169 Ostro at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
3169 Ostro at the JPL Small-Body Database

Kata Kunci Pencarian:

• 3169 Ostro
• Steven J. Ostro
• Ostro (disambiguation)
• Minor-planet moon
• 434 Hungaria
• Hungaria family
• List of minor planets named after people
• Edward L. G. Bowell
• Meanings of minor-planet names: 3001–4000
• List of minor planets: 3001–4000