The Tycho-2 catalogue of the 2.5 million brightest stars

Details The Tycho-2 catalogue of the 2.5 million brightest stars The Tycho-2 catalogue of the 2.5 million brightest stars

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...355l..27h&link_type=abstract

Astronomy and Astrophysics, v.355, p.L27-L30 (2000)

Astronomy and Astrophysics

Astrophysics

859

Astrometry, Stars: Fundamental Parameters, Catalogs

Scientific paper

The Tycho-2 Catalogue presented here is an astrometric reference catalogue containing positions and proper motions as well as two-colour photometric data for the 2.5 million brightest stars in the sky. The Tycho-2 positions and magnitudes are based on precisely the same observations as the original Tycho Catalogue (hereafter Tycho-1) collected by the star mapper of the ESA Hipparcos satellite, but Tycho-2 is much bigger and slightly more precise, owing to a more advanced reduction technique. Components of double stars with separations down to 0.8 arcsec are included. Proper motions precise to about 2.5 mas/yr are given as derived from a comparison with the Astrographic Catalogue and 143 other ground-based astrometric catalogues, all reduced to the Hipparcos celestial coordinate system. Tycho-2 supersedes in most applications Tycho-1, as well as the ACT and TRC catalogues based on Tycho-1. Based on observations made with the ESA Hipparcos astrometry satellite. The catalogue is distributed on CD-ROM and through the astronomical data centres, and further information is given on the website http://www.astro.ku.dk/~erik/Tycho-2.

Affiliated with

Also associated with

No associations

Rating

The Tycho-2 catalogue of the 2.5 million brightest stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Tycho-2 catalogue of the 2.5 million brightest stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Tycho-2 catalogue of the 2.5 million brightest stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1428531