GeoHack - Абика (кратер)

Абика (кратер)
Coordinates on Venus 52° 30′ 0″ N, 104° 24′ 0″ W  (52.5°, -104.4°) Type

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Longitude[править]

Longitudes on Venus are measured eastward from its prime meridian. The original prime meridian passed through the radar-bright spot at the center of the oval feature Eve, located south of Alpha Regio.[1] After the Venera missions were completed, the prime meridian was redefined to pass through the central peak in the crater Ariadne.[2][3]

  1. ^ Davies, M.E.; et al. (1994), "Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites", Celestial Mechanics and Dynamical Astronomy, 63 (2): 127, Bibcode:1996CeMDA..63..127D, doi:10.1007/BF00693410 
  2. ^ "USGS Astrogeology: Rotation and pole position for the Sun and planets (IAU WGCCRE)". Retrieved 22 October 2009. 
  3. ^ "The Magellan Venus Explorer's Guide". Retrieved 22 October 2009. 

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