Epoch J2000.0 Equinox J2000.0 (ICRS)
|Right ascension||04h 16m 01.5857s|
|Declination||−51° 29′ 11.933″|
|Apparent magnitude (V)||4.25|
|U−B color index||+0.03|
|B−V color index||+0.30|
|R−I color index||+0.16|
|Variable type||Gamma Doradus variable|
|Radial velocity (Rv)||25.2 ± 2 km/s|
|Proper motion (μ)||RA: 100.57 mas/yr
Dec.: 184.23 mas/yr
|Parallax (π)||49.26 ± 0.50 mas|
|Distance||66.2 ± 0.7 ly
(20.3 ± 0.2 pc)
|Absolute magnitude (MV)||2.72|
|Luminosity (bolometric)||7.0 L☉|
|Metallicity||[M/H] = −0.02|
|Rotational velocity (v sin i)||62 km/s|
Gamma Doradus (Gamma Dor, γ Doradus, γ Dor) is the third-brightest star in the constellation of Dorado. It has an apparent visual magnitude of approximately 4.25 and is a variable star, the type star of the class of Gamma Doradus variables. These stars, like γ Doradus, are pulsating variables which vary in brightness by less than a tenth of a magnitude owing to nonradial gravity wave oscillations. The magnitude of γ Doradus itself has been observed to have two sinusoidal variations with periods of approximately 17.6 and 18.2 hours. There is also some additional unexplained, apparently random fluctuation.
- V* gam Dor -- Variable Star of gamma Dor type, database entry, SIMBAD. Accessed on line November 17, 2008.
- Gamma Doradus Stars: Defining a New Class of Pulsating Variables, Anthony B. Kaye et al., Publications of the Astronomical Society of the Pacific 111, #761 (July 1999), pp. 840–844, Bibcode: 1999PASP..111..840K.
- HR 1338, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 17, 2008.
- Gamma Dor, Jim Kaler, Stars. Accessed on line November 17, 2008.
- γ Doradus: evidence for a new class of pulsating star, L. A. Balona, K. Krisciunas, and A. W. J. Cousins, Monthly Notices of the Royal Astronomical Society 270, #4 (October 15, 1994), pp. 905–913, Bibcode: 1994MNRAS.270..905B.
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