1232 Cortusa

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1232 Cortusa, provisional designation Template:Mp, is a background asteroid from the outer regions of the asteroid belt, approximately Script error: No such module "convert". in diameter. It was discovered on 10 October 1931, by astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany.[1] The X-type asteroid has a rotation period of 25.2 hours.[2] It was named after the plant Cortusa and indirectly honors astronomer Gustav Stracke.[3]

Orbit and classification

Cortusa is a non-family asteroid from the main belt's background population.[4][5] It orbits the Sun in the outer main-belt at a distance of 2.8–3.6 AU once every 5 years and 8 months (2,073 days; semi-major axis of 3.18 AU). Its orbit has an eccentricity of 0.13 and an inclination of 10° with respect to the ecliptic.[6] The body's observation arc begins with its first observation as Template:Mp at Johannesburg Observatory in July 1930, or 15 months prior to its official discovery observation at Heidelberg.[1]

Naming

This minor planet was named after the flowering plant Cortusa, a species of plant in the primrose family. The official Template:MoMP was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 114Script error: No such module "Check for unknown parameters".).[3] It honors German astronomer and diligent orbit computer Gustav Stracke (1887–1943), who had asked that no asteroid be named after him. The initials of the asteroids Template:MoMP through Template:MoMP, all discovered by Karl Reinmuth, spell out "G. Stracke". In this manner, Reinmuth was able to circumvent Stracke's desire and honor him nevertheless. The asteroid 1019 Strackea was later named after Stracke directly.[7] In the 1990s, astronomer Brian Marsden was also honored by this method, see asteroids Template:MoMP to Template:MoMP. The consecutive initial letters of these minor-planet names spell out "MarsdenB".[8]

Reinmuth's flowers

Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between Template:MoMP and Template:MoMP. This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[9]

Physical characteristics

In the SDSS-based taxonomy, Cortusa is an X-type asteroid.[4][10]

Rotation period

In August 2004, a rotational lightcurve of Cortusa was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a rotation period of Script error: No such module "val". hours with a brightness amplitude of 0.10 magnitude (U=2Script error: No such module "Check for unknown parameters".).[11] Other period determinations were made by René Roy (<10 h) in December 2006 (U=1Script error: No such module "Check for unknown parameters".),[11] and by the Spanish OBAS group (22.05 h) in June 2016 (U=2-Script error: No such module "Check for unknown parameters".).[12]

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, Cortusa measures between 33.13 and 43.27 kilometers in diameter and its surface has an albedo between 0.07 and 0.14.[13][14][15][16][17][18][19][20] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1226 and a diameter of 33.05 kilometers based on an absolute magnitude of 10.3.[2]

References

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  1. ↑ a b Script error: No such module "citation/CS1".
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  3. ↑ a b Script error: No such module "citation/CS1".
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  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1". (PDS data set)
  11. ↑ a b Script error: No such module "citation/CS1".
  12. ↑ Script error: No such module "Citation/CS1".
  13. ↑ Script error: No such module "Citation/CS1".
  14. ↑ Script error: No such module "Citation/CS1".
  15. ↑ Script error: No such module "Citation/CS1".
  16. ↑ Script error: No such module "Citation/CS1".
  17. ↑ Script error: No such module "Citation/CS1".
  18. ↑ Script error: No such module "Citation/CS1". (catalog)
  19. ↑ Script error: No such module "Citation/CS1". (online, AcuA catalog p. 153)
  20. ↑ Script error: No such module "Citation/CS1".

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External links

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