WD 1647+375
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 Artist's impression of white dwarf WD 1647+375 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Hercules[1] |
| Right ascension | 16h 49m 20.2995s[1] |
| Declination | +37° 28′ 21.248″[1] |
| Apparent magnitude (V) | 14.98[1] |
| Characteristics | |
| Evolutionary stage | white dwarf[1] |
| Spectral type | DA2.2[1] |
| Astrometry | |
| Proper motion (μ) | RA: −60.130[1] mas/yr Dec.: +11.234[1] mas/yr |
| Parallax (π) | 12.7364±0.0296 mas[1] |
| Distance | 256.1 ± 0.6 ly (78.5 ± 0.2 pc) |
| Details | |
| Mass | 0.57±0.01[2] M☉ |
| Radius | 0.0144±0.0003[2] R☉ |
| Surface gravity (log g) | 7.88±0.03[2] cgs |
| Temperature | 22,040±31[2] K |
| Age | 30±2[2] Myr |
| Other designations | |
| WD J164920.30+372821.25[2][3], PG 1647+376, SDSS J164920.29+372821.2, Gaia DR2 1351486711809893888[1] | |
| Database references | |
| SIMBAD | data |
WD 1647+375 (WD J164920.30+372821.25, PG 1647+376) is a DA2.2 type white dwarf located approximately 256 light-years from Earth in the constellation Hercules. [1]
This star has a mass of 0.57 M☉ and a radius of 0.0144 R☉. As it is a white dwarf – the remnant of a stellar core, its temperature will be high, specifically 22040 K.[2][3] The log(g) gravity on the surface of this object is 7.88 cgs, and its age is 30 million years.[2]
