All names: GALEX J165657.4+155628, UCAC4 530-062640, V* V824 Her, WD 1654+160, PG 1654+160, ** ZUC 14B, SDSS J165657.44+155627.9, Gaia DR3 4557852490326063232, Gaia DR2 4557852490326063232, WDS J16570+1556B
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 16 56 57.47 (0.03) | |
| Declination | 15 56 27.79 (0.03) | |
| Spectral type | DB2 | |
| Effective temperature | [K] | |
| log(g) | [cgs] | |
| Mass | [M☉] | |
| log(Luminosity) | [L☉] | |
| Cooling age | [Gyr] | |
| log(H/He) | ||
| log(C/He) | ||
| log(Ca/He) | ||
| log(Ca/H) | ||
| Parallax | [mas] | 6.82 (0.05) |
| Distance | [pc] | 146.67 (1) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -59.753 (0.04) |
| Proper motion (declination) | [mas/yr] | 57.028 (0.03) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | ||
| V magnitude | ||
| R magnitude | ||
| I magnitude | ||
| J magnitude | ||
| H magnitude | ||
| K magnitude | ||
| u magnitude | 16.27 (0.006) | |
| g magnitude | 16.36 (0.004) | |
| r magnitude | 16.71 (0.005) | |
| i magnitude | 17.00 (0.006) | |
| z magnitude | 17.30 (0.01) | |
| G magnitude | 16.51 (0.003) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude | ||
| E(B-V) | ||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.