82 Alkmene
Main-belt asteroid
Alkmene (minor planet designation: 82 Alkmene) is a main-belt asteroid. Alkmene was discovered by R. Luther on 7 November 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.[3] A satellite has been suggested based on 1985 lightcurve data.[4]
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.[5][6] Alkmene projected an eclipse shadow that moves at about 3.2 km/s (2 mi/s). 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
- ^ 'Alcmene, Alkmene' in The Century Dictionary and Cyclopedia (1895)
- ^ Mairéad McAuley (2015), Reproducing Rome, p. 126; stress determined by verse in George Chapman, Gentleman Usher, Thomas Parrott 1907 ed., p. 220.
- ^ a b c d e f "JPL Small-Body Database Browser: 82 Alkmene". Retrieved 9 September 2014.
- ^ "Other reports of asteroid/TNO companions".
- ^ Interactive GoogleMap of Shadow Path Archived 2014-09-09 at archive.today
- ^ "(82) Alkmene / HIP 99229 event on 2014 Sep 18, 06:41 UT". Archived from the original on 11 September 2014.
External links
- 82 Alkmene at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
- 82 Alkmene at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
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- 81 Terpsichore
- 82 Alkmene
- 83 Beatrix
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