GD 356
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Draco |
| Right ascension | 16h 40m 57.16s |
| Declination | +53° 41′ 09.6″ |
| Apparent magnitude (V) | 15.06 |
| Characteristics | |
| Evolutionary stage | white dwarf |
| Spectral type | DAHe |
| Apparent magnitude (B) | ~15.39 |
| Apparent magnitude (R) | ~15.1 |
| Apparent magnitude (I) | ~14.0 |
| Apparent magnitude (J) | ~14.493 |
| Apparent magnitude (H) | ~14.479 |
| Apparent magnitude (K) | ~14.369 |
| U−B color index | −0.52 |
| B−V color index | +0.33 |
| Variable type | 0.2% over 115 minutes |
| Astrometry | |
| Radial velocity (Rv) | 25 km/s |
| Proper motion (μ) | RA: −119.425±0.031 mas/yr Dec.: −190.438±0.031 mas/yr |
| Parallax (π) | 49.6501±0.0207 mas |
| Distance | 65.69 ± 0.03 ly (20.141 ± 0.008 pc) |
| Absolute magnitude (MV) | 13.43 |
| Details | |
| Mass | 0.67 M☉ |
| Surface gravity (log g) | 8 cgs |
| Temperature | 7510 K |
| Rotation | 115 minutes |
| Age | About 2.1 Gyr |
| Other designations | |
| Gliese 1205, LP 137-43, EGGR 329, WD 1639+537 | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
GD 356 is a white dwarf in the constellation of Draco showing an unusual emission of circular polarised light. The star is 65 light years from earth.
Other catalog names for this are LP 137-43, EGGR 329 and WD 1639+537.