TX Piscium
Carbon star visible to the naked eye in the constellation Pisces / From Wikipedia, the free encyclopedia
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TX Piscium (19 Piscium) is a variable red giant star in the constellation Pisces. It is amongst the reddest naked eye stars, with a significant reddish hue when seen in binoculars. It is approximately 800 light years from Earth.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Pisces |
Right ascension | 23h 46m 23.51645s[1] |
Declination | +03° 29′ 12.5190″[1] |
Apparent magnitude (V) | 4.79 - 5.20[2] |
Characteristics | |
Spectral type | C7,2[3] |
U−B color index | +3.33[4] |
B−V color index | +2.60[4] |
Variable type | Lb[2] |
Astrometry | |
Radial velocity (Rv) | +11.5±1.5[5] km/s |
Proper motion (μ) | RA: −32.086[1] mas/yr Dec.: −24.545[1] mas/yr |
Parallax (π) | 4.0894 ± 0.2124 mas[1] |
Distance | 800 ± 40 ly (240 ± 10 pc) |
Absolute magnitude (MV) | −2.22[5] |
Details | |
Mass | 1 – 3[6] M☉ |
Radius | 295[6] R☉ |
Luminosity | 7,019 – 7,876[6] L☉ |
Surface gravity (log g) | −0.2 – −0.5[6] cgs |
Temperature | 3,080 – 3,170[6] K |
Metallicity [Fe/H] | −0.39[7] dex |
Other designations | |
Database references | |
SIMBAD | data |
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