1419 Danzig
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1419 Danzig (prov. designation: Template:Mp) is a highly elongated Flora asteroid from the inner regions of the asteroid belt. It was discovered on 5 September 1929, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.[1] The stony S-type asteroid has a rotation period of 8.1 hours and measures approximately Script error: No such module "convert". in diameter. It was named for the city of Gdańsk (Template:Langx).[2]
Classification and orbit
When applying the synthetic hierarchical clustering method (HCM) by Nesvorný,[3] Danzig is a member of the Flora family (402Script error: No such module "Check for unknown parameters".), a giant asteroid family and the largest family of stony asteroids in the main-belt.[4]Template:Rp However, according to the 1995 HCM-analysis by Zappalà,[5] and HCM-analysis by Milani and Knežević (AstDys), it is a background asteroid. The latter HCM-analysis does not recognize the Flora asteroid clan.[6]
Danzig orbits the Sun at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,268 days). Its orbit has an eccentricity of 0.15 and an inclination of 6° with respect to the ecliptic.[7] In 1917, it was first observed as Template:Mp at Simeiz Observatory (and Heidelberg on the following night), extending the body's observation arc by 12 years prior to its official discovery observation at Heidelberg.[1]
Naming
This minor planet was named after the now Polish city and port on the Baltic sea, Gdańsk (Template:Langx). The city was also honored by another minor planet, Template:Mp.[2] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 128Script error: No such module "Check for unknown parameters".)[2]
Physical characteristics
The overall spectral type for Florian asteroid is that of a stony S-type.[4]Template:Rp
Rotation period and pole
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In November 1988, Polish astronomer Wiesław Wiśniewski obtained a rotational lightcurve of Danzig from photometric observations. It gave a well-defined rotation period of Script error: No such module "val". hours with a brightness variation of 0.92 magnitude (U=3Script error: No such module "Check for unknown parameters".).[8] In October 2002, another lightcurve obtained by Italian and French amateur astronomers Silvano Casulli and Laurent Bernasconi gave a concurring period of Script error: No such module "val". hours and an amplitude of 0.81 magnitude (U=3Script error: No such module "Check for unknown parameters".).[9] While Danzig has an average rotation period, it has a high brightness variation, which indicates that the body has a non-spheroidal shape. In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue (UAPC) and other sources gave a period Script error: No such module "val". hours, as well as a spin axis of (22.0°, 76.0°) in ecliptic coordinates (λ, β) (U=n.a.Script error: No such module "Check for unknown parameters".).[10]
Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Danzig measures 14.059 and 15.09 kilometers in diameter and its surface has an albedo between 0.238 and 0.260.[11][12][13] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data, that is, an albedo of 0.2324 and a diameter of 14.139 kilometers with an absolute magnitude of 11.45.[14][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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