ET Andromedae

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ET Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 17m 56.01s[1]
Declination +45° 29′ 20.1″[1]
Apparent magnitude (V) 6.49
Characteristics
Spectral type B9p
U−B color index 1.96
B−V color index 1.58
Variable type Alpha² CVn
Astrometry
Radial velocity (Rv) -2 km/s
Proper motion (μ) RA: 24.78 ± 0.29[1] mas/yr
Dec.: -10.09 ± 0.31[1] mas/yr
Parallax (π) 5.56 ± 0.44[1] mas
Distance 590 ± 50 ly
(180 ± 10 pc)
Absolute magnitude (MV) 6.451
Details
Mass 18 M
Radius R
Luminosity 20,000 L
Temperature 10,000–30,000 K
Metallicity ?
Rotation 0.007129363 Year
Age ? years
Other designations
GSC 03636-02562, PPM 64037, AG+45° 2124, HD 219749, BD+44° 4373, SAO 52876, HIP 115036, HR 8861, 2MASS J23175600+4529201, TYC 3636-2562-1.
Database references
SIMBAD data

ET Andromedae is a variable star in the constellation of Andromeda.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry