Astrographic Catalog

(ass-trŏ-graf -ik) See Carte du Ciel.

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Many of the stars have SAO designations from the Smithsonian Astrophysical Observatory Star Catalog; others are identified by ZC (Zodiacal Catalogue), TYC (Tycho-2), PPM (Positions and Proper Motions), or TAC (Twin Astrographic Catalog) numbers.

Planetary occcultations for 2001

Many of the stars are in the SAO Star Catalog; others are identified by their numbers in the Astrographic Catalog -- Tycho (ACT), Tycho Reference Catalog (TRC), Positions and Proper Motions (PPM), Twin Astrographic Catalog (TAC), or Hubble Guide Star Catalog (GSC).

Planetary Occultations for 2000 : No other technique in the arsenal of modern astronomers has been so prolific for gauging the sizes and shapes of asteroids

This catalog is known as the Astrographic Catalog Reference Stars, or ACRS.

The astrographic catalogue: a century of work pays off

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