Nu Piscium

Nu Piscium
Location of ν Piscium (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pisces
Right ascension 01h 41m 25.89414s[1]
Declination +05° 29′ 15.4018″[1]
Apparent magnitude (V) 4.44[2]
Characteristics
Spectral type K3 IIIb[2]
B−V color index 1.37[2]
Astrometry
Radial velocity (Rv)0.6±0.18[1] km/s
Proper motion (μ) RA: −23.323 mas/yr[1]
Dec.: 3.505 mas/yr[1]
Parallax (π)8.9275 ± 0.1567 mas[1]
Distance365 ± 6 ly
(112 ± 2 pc)
Absolute magnitude (MV)−0.78[3]
Details
ν Psc A
Mass1.66[2] M☉
Radius34.58+0.81
−0.83[4] R☉
Luminosity380[2] L☉
Surface gravity (log g)1.91[5] cgs
Temperature4,154[2] K
Metallicity [Fe/H]−0.16[5] dex
Age3.41[2] Gyr
Other designations
ν Psc, 106 Piscium, BD+04° 293, FK5 56, HD 10380, HIP 7884, HR 489, SAO 110065[6]
Database references
SIMBADdata

Nu Piscium (ν Piscium) is an orange-hued binary star[7] system in the zodiac constellation of Pisces. Prior to the formation of the modern constellation boundaries in 1930, it was designated 51 Ceti in the Cetus constellation.[8] Nu Piscium is visible to the naked eye, having a combined apparent visual magnitude of 4.44.[2] Based upon an annual parallax shift of 8.98 mas as seen from Earth,[1] it is located about 365 light years from the Sun.

The primary, component A, is an evolved, K-type giant star with a stellar classification of K3 IIIb.[2] It is a weak barium star, indicating that the atmosphere was previously enriched by accretion of s-process elements from what is now a white dwarf companion.[9] The giant has 1.66[2] times the mass of the Sun and has expanded to about 35[4] times the Sun's radius. It is about 3.4 billion years old and is radiating 380 times the Sun's luminosity from its photosphere at an effective temperature of 4,154 K.[2]

  1. ^ a b c d e f Cite error: The named reference gaia was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference baines was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Prugniel was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Wagman1987 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference gomez1997 was invoked but never defined (see the help page).