TX Piscium

TX Piscium
Location of TX Piscium (circled)
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]
Distance800 ± 40 ly
(240 ± 10 pc)
Absolute magnitude (MV)−2.22[5]
Details
Mass1 – 3[6] M☉
Radius295[6] R☉
Luminosity7,019 – 7,876[6] L☉
Surface gravity (log g)−0.2 – −0.5[6] cgs
Temperature3,080 – 3,170[6] K
Metallicity [Fe/H]−0.39[7] dex
Other designations
19 Psc, TX Psc, BD+02°4709, FK5 3908, HD 223075, HIP 117245, HR 9004, SAO 128374
Database references
SIMBADdata

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.

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  2. ^ a b Cite error: The named reference gcvs was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Yamashita1972 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference ducati was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference klotz was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference abia was invoked but never defined (see the help page).