Mu Phoenicis

Mu Phoenicis
Location of μ Phoenicis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Phoenix
Right ascension 00h 41m 19.55229s[1]
Declination −46° 05′ 06.0184″[1]
Apparent magnitude (V) 4.59[2]
Characteristics
Spectral type G8III[3]
U−B color index +0.72[2]
B−V color index +0.97[2]
Astrometry
Radial velocity (Rv)+17.41±0.16[4] km/s
Proper motion (μ) RA: −28.20[1] mas/yr
Dec.: +1.80[1] mas/yr
Parallax (π)13.27 ± 0.23 mas[1]
Distance246 ± 4 ly
(75 ± 1 pc)
Absolute magnitude (MV)0.21[5]
Details
Mass2.50[6] M☉
Radius13.15+2.59
−2.28[4] R☉
Luminosity96.6±2.4[4] L☉
Temperature4,900[7] K
Rotational velocity (v sin i)1.4[8] km/s
Age1.4[6] Gyr
Other designations
μ Phe, CD−46°180, FK5 1015, GC 823, HD 3919, HIP 3245, HR 180, SAO 215194[9]
Database references
SIMBADdata

μ Phoenicis, Latinized as Mu Phoenicis, is a suspected astrometric binary[10] star system in the southern constellation of Phoenix. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.59.[2] This system is located approximately 246 light years distant from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +17.4 km/s.[4]

The visible component is an aging G-type giant star with a stellar classification of G8III.[3] Having exhausted the supply of hydrogen at its core, this star cooled and expanded off the main sequence. At present it has 13[4] times the girth of the Sun. It is 1.4[6] billion years old with 2.5[6] times the mass of the Sun. It is radiating 97[4] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,900 K.[7]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Ducati2002 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference XHIP was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference luck2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Gontcharov2008 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference deMedeiros2014 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).