All names: Gaia DR3 676196421267066880, Gaia EDR3 676196421267066880, GALEX J081755.9+212134, Gaia DR2 676196421267066880, SDSS J081755.98+212133.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 17 55.98 (0.5) | 08 17 55.98 | 08 17 55.98 (0.8) | 08 17 55.99 (0.5) | 08 17 55.98 | ||||
| Declination | 21 21 33.57 (0.4) | 21 21 33.57 | 21 21 33.57 (0.5) | 21 21 33.63 (0.4) | 21 21 33.62 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 12766.0 (643) | |||||||
| log(g) | [cgs] | 8.03 (0.2) | |||||||
| Mass | [M☉] | 0.623 (0.1) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.51 (0.7) | -0.31 (1) | 0.51 (0.7) | |||||
| Distance | [pc] | 1971.52 (2783) | 1971.61 (2784) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -6.135251992 (0.6) | -8.555589918 (2) | -6.135 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | -3.4579295 (0.4) | -2.656283507 (1) | -3.458 (0.4) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.44 (0.05) | 20.45 (0.05) | 20.45 (0.05) | ||||||
| g magnitude | 20.07 (0.02) | 20.08 (0.02) | 20.08 (0.02) | ||||||
| r magnitude | 20.22 (0.02) | 20.23 (0.02) | 20.23 (0.02) | ||||||
| i magnitude | 20.48 (0.04) | 20.50 (0.04) | 20.50 (0.04) | ||||||
| z magnitude | 20.78 (0.1) | 20.76 (0.1) | 20.76 (0.1) | ||||||
| G magnitude | 20.15 (0.06) | 20.22 | 20.15 (0.006) | ||||||
| BP magnitude | 20.07 (0.06) | 20.18 | |||||||
| RP magnitude | 20.12 (0.1) | 19.89 | |||||||
| Pan g magnitude | 20.05 (0.009) | ||||||||
| Pan r magnitude | 20.29 (0.04) | ||||||||
| Pan i magnitude | 20.51 (0.01) | ||||||||
| Pan z magnitude | 20.68 (0.05) | ||||||||
| Pan y magnitude | 20.67 (0.2) | ||||||||
| E(B-V) | 0.033 | ||||||||
* 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.