Английская Википедия:2005 Hencke
2005 Hencke, provisional designation Шаблон:Mp, is a stony Eunomia asteroid from the middle region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland, on 2 September 1973.[1] The asteroid was named after German amateur astronomer Karl Ludwig Hencke.[2]
Orbit and classification
The asteroid is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun in the central main-belt at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,550 days). Its orbit has an eccentricity of 0.17 and an inclination of 12° with respect to the ecliptic.[3] As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1973.[1]
Physical characteristics
Rotation period
In October 2007, a rotational lightcurve was obtained for this asteroid from photometric observations taken by U.S. astronomer James W. Brinsfield at the Via Capote Observatory in Thousand Oaks, California Шаблон:Obscode. The lightcurve gave a rotation period of Шаблон:Val hours with a brightness amplitude of 0.08 in magnitude (Шаблон:Small).[4]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 9.4 kilometers in diameter and its surface has an albedo of 0.27,[5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21, derived from the family's largest member and namesake, 15 Eunomia, and calculates a diameter of 10.5 kilometers.[4]
Naming
This minor planet was named in honor of German amateur astronomer Karl Ludwig Hencke (1793–1866), a postmaster by profession, who discovered the main-belt asteroids 5 Astraea and 6 Hebe in 1845 and 1847, respectively.[2] The official Шаблон:MoMP was published by the Minor Planet Center on 15 October 1977 (Шаблон:Small).[6]
References
External links
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- 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
- Шаблон:AstDys
- Шаблон:JPL small body
Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
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- Английская Википедия
- Eunomia asteroids
- Discoveries by Paul Wild (Swiss astronomer)
- Named minor planets
- Astronomical objects discovered in 1973
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