| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h54m 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] |
| Distance | 610 ± 10 ly (186 ± 4 pc) |
| Absolute magnitude (MV) | −1.76[4] |
| Details | |
| Radius | 54.29+1.69 −3.42[1] R☉ |
| Luminosity | 708.4±19.5[1] L☉ |
| Surface gravity (log g) | 1.74[6] cgs |
| Temperature | 4,041+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 | |
| SIMBAD | data |
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]
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