32 Vulpeculae

32 Vulpeculae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vulpecula
Right ascension 20h 54m 33.63782s[1]
Declination +28° 03′ 27.4632″[1]
Apparent magnitude (V) 5.03[2] (4.99–5.06)[3]
Characteristics
Evolutionary stage giant[4]
Spectral type K4 III[5]
B−V color index 1.480[4]
Variable type suspected[3]
Astrometry
Radial velocity (Rv)+5.7±0.6[2] km/s
Proper motion (μ) RA: −2.525±0.209[1] mas/yr
Dec.: −2.277±0.197[1] mas/yr
Parallax (π)5.3885 ± 0.1260 mas[1]
Distance610 ± 10 ly
(186 ± 4 pc)
Absolute magnitude (MV)−1.76[4]
Details
Radius54.29+1.69
−3.42[1] R☉
Luminosity708.4±19.5[1] L☉
Surface gravity (log g)1.74[6] cgs
Temperature4,041+134
−61[1] K
Metallicity [Fe/H]−0.16[6] dex
Rotational velocity (v sin i)8.1[4] km/s
Other designations
32 Vul, NSV 13398, BD+27° 3911, FK5 786, GC 29178, HD 199169, HIP 103200, HR 8008, SAO 89272[7]
Database references
SIMBADdata

32 Vulpeculae is a single[8] star located around 610[1] light years away from the Sun in the northern constellation Vulpecula,[7] a few degrees south of the border with Cygnus. It is visible to the naked eye as a faint, orange-hued star with a typical apparent visual magnitude of 5.03.[2] This object is drifting further away from the Earth with a heliocentric radial velocity of +6 km/s.[2]

This is an aging red giant[4] star with a stellar classification of K4 III,[5] having exhausted the supply of hydrogen at its core then expanded to 54[1] times the Sun's radius. It is a suspected variable of unknown type, with a visual magnitude that has been measured ranging from 4.99 down to 5.06.[3] The star is radiating 708[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,041 K.[1]

  1. ^ a b c d e f g h i j k l Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference Ryon2009 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Roman1952 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference McWilliam1990 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Simbad was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).