Offset directions

  • N (North) - positive offset in declination or latitude
  • E (East) - positive offset in right ascension or longitude
  • S (South) - negative offset in declination or latitude
  • W (West) - negative offset in right ascension or longitude

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A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Andrew F. Ptak
LAMBDA Director: Dr. Thomas M. Essinger-Hileman
NASA Official: Dr. Thomas M. Essinger-Hileman
Web Curator: Mr. Michael R. Greason