All names: Gaia EDR3 907346647695180928, GALEX J080456.4+373443, Gaia DR2 907346647695180928, SDSS J080456.39+373443.5, SDSS J080456.39+373443.57, Gaia DR3 907346647695180928
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 04 56.38 (0.3) | 08 04 56.39 | 08 04 56.38 (0.4) | 08 04 56.40 (0.3) | |||||
| Declination | 37 34 42.99 (0.2) | 37 34 43.57 | 37 34 43.02 (0.3) | 37 34 43.65 (0.2) | |||||
| Spectral type | DA+M3 | DA+M3 | DA+MS | ||||||
| Effective temperature | [K] | 15071.0 (514) | |||||||
| log(g) | [cgs] | 7.70 (0.08) | |||||||
| Mass | [M☉] | 0.488 (0.03) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.74 (0.3) | 3.15 (0.5) | 2.74 (0.3) | |||||
| Distance | [pc] | 365.47 (46) | 317.40 (50) | 365.47 (46) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -10.96006669 (0.4) | -10.12438178 (0.8) | -10.96 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | -40.68743951 (0.2) | -41.34791125 (0.6) | -40.687 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.33 (0.04) | 20.33 (0.04) | 20.34 (0.04) | ||||||
| g magnitude | 19.66 (0.01) | 19.68 (0.02) | 19.66 (0.01) | ||||||
| r magnitude | 19.63 (0.02) | 19.64 (0.02) | 19.63 (0.02) | ||||||
| i magnitude | 19.23 (0.02) | 19.24 (0.02) | 19.23 (0.02) | ||||||
| z magnitude | 18.86 (0.04) | 18.89 (0.04) | 18.86 (0.04) | ||||||
| G magnitude | 19.42 (0.04) | 19.44 | 19.42 (0.004) | ||||||
| BP magnitude | 19.69 (0.04) | 19.65 | |||||||
| RP magnitude | 18.85 (0.05) | 18.92 | |||||||
| Pan g magnitude | 19.67 (0.01) | ||||||||
| Pan r magnitude | 19.62 (0.006) | ||||||||
| Pan i magnitude | 19.26 (0.007) | ||||||||
| Pan z magnitude | 18.92 (0.01) | ||||||||
| Pan y magnitude | 18.56 (0.07) | ||||||||
| E(B-V) | 0.030 | ||||||||
* 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.