Catalogues of Fundamental Stars
The Catalogue of Fundamental Stars is a series of six astrometric catalogues of high precision positional data for a small selection of stars to define a celestial reference frame, which is a standard coordinate system for measuring positions of stars.
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[edit] Publication of FK4 through FK6
The Fourth Fundamental Catalogue (FK4) was published in 1963, and contained 1,535 stars in various equinoxes from 1950.0 to 1975.0 .
The Fourth Fundamental Catalogue's Supplement (FK4S) was an amendment to FK4 that contains a further 1,987 stars.
The Fifth Fundamental Catalogue (FK5) was a 1988 update of FK4 with new positions for the 1,535 stars. It was superseded by the quasar-based International Celestial Reference Frame (ICRF).
The Fifth Fundamental Catalogue Extension (FK5), published in 1991, added 3,117 new stars.
The Sixth Fundamental Catalogue (FK6) is a 2000 update of FK5 correlated with the ICRF through the Hipparcos satellite. It comes in two parts: FK6(I) and FK6(III). FK6(I) contains 878 stars, and FK6(III) contains 3,272 stars. Both are updated and amended versions of FK5, using Hipparcos catalogue data[1].
[edit] Examples
- Iota Arietis is located in FK5 as item 2132
- Alpha Arietis is FK5 item 74
- Kappa Aurigae is FK5 item 1168
[edit] See also
Astronomical Calculation Institute
[edit] References
- ^ ReadMe for Sixth Catalogue of Fundamental Stars (FK6) at VizieR Service at Centre de Données astronomiques de Strasbourg
[edit] External links
- Fifth fundamental catalogue part I Basic FK5 (1988)
- Fifth fundamental catalogue part II FK5 extension
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