All names: SDSS J125733.63+542850.5, SDSS J125733.64+542850.4, 2MASS J12573372+5428505, SDSS J125733.64+542850.5, WD 1255+547, EQ J1257+5428, WIRED J125733.64+542850.5, Gaia DR2 1570271658673389568
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 12 57 33.65 (0.04) | |
| Declination | 54 28 50.45 (0.05) | |
| Spectral type | DA | |
| 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] | 8.37 (0.06) |
| Distance | [pc] | 119.42 (0.9) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -45.595 (0.09) |
| Proper motion (declination) | [mas/yr] | 11.637 (0.09) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | ||
| V magnitude | ||
| R magnitude | ||
| I magnitude | ||
| J magnitude | 16.30 (0.1) | |
| H magnitude | 15.73 (0.2) | |
| K magnitude | 15.26 (0.1) | |
| u magnitude | 17.36 (0.009) | |
| g magnitude | 16.84 (0.004) | |
| r magnitude | 16.74 (0.005) | |
| i magnitude | 16.73 (0.005) | |
| z magnitude | 16.77 (0.01) | |
| G magnitude | 16.70 (0.001) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.