Girish Mahajan (Editor)

82 Alkmene

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Discovery date
  
November 27, 1864

Aphelion
  
3.3701 AU

Semi-major axis
  
2.7655 AU

Orbits
  
Sun

Discoverer
  
Robert Luther

Minor planet category
  
Main belt

Perihelion
  
2.1609 AU

Discovered
  
27 November 1864

Spectral type
  
S-type asteroid

Named after
  
Alcmene

82 Alkmene httpsuploadwikimediaorgwikipediacommonsthu

Discovered by
  
Karl Theodor Robert Luther

Discovery site
  
Düsseldorf-Bilk Observatory

Robert Luther discoveries
  
47 Aglaja, 95 Arethusa, 68 Leto, 26 Proserpina

82 Alkmene (/ælkˈmn/ alk-MEE-nee) is a main-belt asteroid. Alkmene was discovered by R. Luther on November 27, 1864, and named after Alcmene, the mother of Herakles in Greek mythology. Based on IRAS data, Alkmene is estimated to be about 61 kilometres (38 mi) in diameter. A satellite has been suggested based on 1985 lightcurve data.

Asteroid Alkmene occulted the apparent magnitude 7.5 star HIP 99229 in the constellation of Capricornus on 18 September 2014 around 06:41 UT (17 September 23:41 PDT) and was centered on Sacramento, CA. Alkmene projected an eclipse shadow that moves at about 2 miles (3.2 km) per second. Asteroid occultations allow for accurate 2-dimensional mapping of an asteroids silhouette when observed by multiple telescopes separated by about 10 km (6.2 mi).

References

82 Alkmene Wikipedia


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