All names: Gaia DR3 1034975243028553600, SDSS J082257.57+575011.1, SDSS J082257.57+575011.2, Gaia DR2 1034975243028553600, GALEX J082257.5+575010, SBSS 0818+579, SDSS J082257.56+575011.0, SDSS J082257.56+575011.1, Gaia EDR3 1034975243028553600
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 22 57.59 (0.09) | 08 22 57.57 | 08 22 57.59 (0.1) | 08 22 57.59 | 08 22 57.57 (0.09) | 08 22 57.57 | |||||
| Declination | 57 50 11.11 (0.09) | 57 50 11.01 | 57 50 11.11 (0.1) | 57 50 11.11 | 57 50 11.11 (0.09) | 57 50 11.16 | |||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 67526.0 (2010) | 32491.0 (1852) | 63959.0 (2516) | |||||||
| log(g) | [cgs] | 7.51 (0.1) | 7.12 (0.1) | 7.56 (0.1) | |||||||
| Mass | [M☉] | 0.54 (0.03) | 0.346 (0.03) | 0.556 (0.04) | |||||||
| log(Luminosity) | [L☉] | 0.93 (0.09) | |||||||||
| Cooling age | [Gyr] | 0.0003 (0.0002) | |||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(C/H) | |||||||||||
| log(N/H) | |||||||||||
| log(O/H) | |||||||||||
| log(Na/H) | |||||||||||
| log(Mg/H) | |||||||||||
| log(Al/H) | |||||||||||
| log(Si/H) | |||||||||||
| log(P/H) | |||||||||||
| log(S/H) | |||||||||||
| log(Sc/H) | |||||||||||
| log(Ti/H) | |||||||||||
| log(Cr/H) | |||||||||||
| log(Mn/H) | |||||||||||
| log(Fe/H) | |||||||||||
| log(Ni/H) | |||||||||||
| Parallax | [mas] | 1.25 (0.1) | 1.08 (0.2) | 1.25 | 1.25 (0.1) | ||||||
| Distance | [pc] | 797.88 (76) | 921.96 (152) | 797.88 | 797.89 (76) | ||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 13.79548024 (0.09) | 13.43978917 (0.2) | 13.795 (0.09) | |||||||
| Proper motion (declination) | [mas/yr] | 0.004963143 (0.1) | 0.051119991 (0.2) | 0.005 (0.1) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.50 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 17.52 (0.01) | 17.52 (0.01) | 17.51 (0.02) | ||||||||
| g magnitude | 17.85 (0.006) | 17.85 (0.006) | 17.85 (0.02) | ||||||||
| r magnitude | 18.25 (0.008) | 18.25 (0.008) | 18.24 (0.03) | ||||||||
| i magnitude | 18.52 (0.01) | 18.52 (0.01) | 18.51 (0.02) | ||||||||
| z magnitude | 18.60 (0.03) | 18.60 (0.04) | 18.59 (0.04) | ||||||||
| G magnitude | 18.04 (0.009) | 18.08 | 18.04 | 18.04 (0.003) | |||||||
| BP magnitude | 17.96 (0.009) | 17.90 | |||||||||
| RP magnitude | 18.24 (0.02) | 18.24 | |||||||||
| Pan g magnitude | 17.91 (0.006) | ||||||||||
| Pan r magnitude | 18.27 (0.005) | ||||||||||
| Pan i magnitude | 18.54 (0.005) | ||||||||||
| Pan z magnitude | 18.71 (0.005) | ||||||||||
| Pan y magnitude | 18.82 (0.02) | ||||||||||
| E(B-V) | 0.043 | ||||||||||
* 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.