All names: Gaia DR2 1890833719700431744, SDSS J224555.86+331349.5, SDSS J224555.86+331349.52, Gaia DR3 1890833723996889728, Gaia EDR3 1890833723996889728, SDSS J224555.86+331349.6, GALEX J224555.8+331349
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 45 55.86 (0.1) | 22 45 55.86 | 22 45 55.86 (0.2) | 22 45 55.86 | 22 45 55.87 (0.1) | |||||
| Declination | 33 13 49.38 (0.2) | 33 13 49.69 | 33 13 49.39 (0.2) | 33 13 49.38 | 33 13 49.83 (0.2) | |||||
| Spectral type | DA+Me | DA | DA+Me | DA | ||||||
| Effective temperature | [K] | 10761.0 (27) | 10047.0 (259) | |||||||
| log(g) | [cgs] | 8.33 (0.03) | 6.62 (0.1) | |||||||
| Mass | [M☉] | 0.6409999999999999 (0.02) | 0.15 (0.04) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.11 (0.2) | 2.03 (0.3) | 2.11 | 2.11 (0.2) | |||||
| Distance | [pc] | 472.91 (42) | 492.69 (61) | 472.91 | 472.90 (42) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.158729905 (0.2) | -3.376548257 (0.5) | -3.159 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -28.47585515 (0.2) | -28.02806851 (0.4) | -28.476 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.86 (0.02) | 18.85 (0.02) | 18.86 (0.02) | |||||||
| g magnitude | 18.55 (0.007) | 18.57 (0.01) | 18.55 (0.007) | |||||||
| r magnitude | 18.85 (0.009) | 18.86 (0.01) | 18.84 (0.009) | |||||||
| i magnitude | 18.95 (0.01) | 18.95 (0.01) | 18.95 (0.01) | |||||||
| z magnitude | 18.90 (0.03) | 18.91 (0.04) | 18.89 (0.04) | |||||||
| G magnitude | 18.66 (0.02) | 18.68 | 18.66 | 18.66 (0.003) | ||||||
| BP magnitude | 18.68 (0.02) | 18.66 | ||||||||
| RP magnitude | 18.61 (0.03) | 18.56 | ||||||||
| Pan g magnitude | 18.58 (0.008) | |||||||||
| Pan r magnitude | 18.83 (0.007) | |||||||||
| Pan i magnitude | 18.93 (0.009) | |||||||||
| Pan z magnitude | 18.92 (0.02) | |||||||||
| Pan y magnitude | 18.84 (0.03) | |||||||||
| E(B-V) | 0.065 | |||||||||
* 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.