Tau Pegasi
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Tau Pegasi (τ Peg, τ Pegasi) is a 4.6 magnitude star in the constellation Pegasus. The star has also the traditional names Salm, Kerb (or El Khereb) and Markab, a name shared with α Pegasi, k Puppis and κ Velorum. τ Pegasi belongs to the spectral class A5 Vp, making it an A-type main sequence star.
This is a Delta Scuti variable star with a pulsation period of 0.94 hours. It is rotating rapidly with a projected rotational velocity of 150 km s–1. Tau Pegasi is radiating nearly 30 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 7,762 K.[1]
[edit] Coordinates (equinox 2000)
- Right Ascension: 23h20m38.20s
- Declination: +23°44'25.0"
[edit] References
- ^ Balona, L. A.; Dziembowski, W. A. (October 1999), "Excitation and visibility of high-degree modes in stars", Monthly Notices of the Royal Astronomical Society 309 (1): 221-232, Bibcode 1999MNRAS.309..221B, doi:10.1046/j.1365-8711.1999.02821.x
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