1129 Neujmina
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1129 Neujmina (prov. designation: Template:Mp) is an Eos asteroid from the outer regions of the asteroid belt. It was discovered on 8 August 1929, by astronomer Praskoviya Parchomenko at the Simeiz Observatory on the Crimean peninsula.[1] The stony S-type asteroid has a rotation period of 5.1 hours and measures approximately Script error: No such module "convert". in diameter. It was named after Soviet astronomer Grigory Neujmin.[2]
Orbit and classification
Neujmina is a member the Eos family (606Script error: No such module "Check for unknown parameters".),[3] the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids.[4]Template:Rp It orbits the Sun at a distance of 2.8–3.3 AU once every 5 years and 3 months (1,919 days). Its orbit has an eccentricity of 0.08 and an inclination of 9° with respect to the ecliptic.[5] The asteroid was first identified as Template:Mp at Simeiz in November 1911, followed by Template:Mp at Heidelberg in January 1926. The body's observation arc begins four weeks after its official discovery observation at Simeiz.[1]
Naming
This minor planet was named after Georgian–Russian astronomer Grigory Neujmin (1885–1946), a discoverer of minor planets and comets, observer at Pulkovo Observatory and college of Parchomenko at Simeiz Observatory. The Template:MoMP was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 106Script error: No such module "Check for unknown parameters".). The lunar crater Neujmin was also named in his honor.[2]
Physical characteristics
In the Tholen classification, Neujmina is a stony S-type asteroid.[5]
Rotation period
In March 2011, a rotational lightcurve of Neujmina was obtained from photometric observations at the Oakley Southern Sky Observatory Template:Obscode in Australia. Lightcurve analysis gave a well-defined rotation period of 5.0844 hours with a brightness variation of 0.20 magnitude (U=3Script error: No such module "Check for unknown parameters".).[6] Previous measurements in 1984 and 2008, gave a period of 5.089 and 7.61 hours with an amplitude of 0.15 and 0.06 magnitude, respectively (U=2/2Script error: No such module "Check for unknown parameters".).[7][8]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Neujmina measures between 30.99 and 39.246 kilometers in diameter and its surface has an albedo between 0.0999 and 0.138.[9][10][11][12][13][14] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1270 and a diameter of 34.80 kilometers based on an absolute magnitude of 10.15.[15]
References
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External links
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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