All names: Gaia DR2 1030259987412228096, SDSS J083948.99+533508.88, SDSS J083949.01+533508.6, SDSS J083949.00+533508.6, Gaia DR3 1030259987412228096, Gaia EDR3 1030259987412228096, GALEX J083949.0+533509, SDSS J083948.99+533508.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 39 49.00 (0.5) | 08 39 49.01 | 08 39 49.01 (0.7) | 08 39 49.01 (0.5) | ||||
| Declination | 53 35 08.52 (0.5) | 53 35 08.62 | 53 35 08.52 (0.6) | 53 35 08.63 (0.5) | ||||
| Spectral type | DA | DA | ||||||
| Effective temperature | [K] | 11642.0 (236) | ||||||
| log(g) | [cgs] | 7.91 (0.1) | ||||||
| Mass | [M☉] | 0.557 (0.05) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.97 (0.7) | 0.69 (0.9) | 0.97 (0.7) | ||||
| Distance | [pc] | 1035.68 (801) | 1457.52 (1959) | 1035.73 (801) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -3.998643798 (0.7) | -2.117337346 (2) | -3.999 (0.7) | ||||
| Proper motion (declination) | [mas/yr] | -7.032767023 (0.5) | -5.903066285 (1) | -7.033 (0.5) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 20.81 (0.07) | 20.85 (0.07) | 20.80 (0.07) | |||||
| g magnitude | 20.33 (0.02) | 20.38 (0.03) | 20.33 (0.02) | |||||
| r magnitude | 20.49 (0.04) | 20.55 (0.04) | 20.49 (0.04) | |||||
| i magnitude | 20.27 (0.04) | 20.32 (0.04) | 20.27 (0.04) | |||||
| z magnitude | 19.89 (0.1) | 19.96 (0.1) | 19.96 (0.1) | |||||
| G magnitude | 20.37 (0.1) | 20.42 | 20.37 (0.007) | |||||
| BP magnitude | 20.51 (0.1) | 20.62 | ||||||
| RP magnitude | 20.04 (0.09) | 19.88 | ||||||
| Pan g magnitude | 20.44 (0.02) | |||||||
| Pan r magnitude | 20.48 (0.02) | |||||||
| Pan i magnitude | 20.45 (0.02) | |||||||
| Pan z magnitude | 20.13 (0.03) | |||||||
| Pan y magnitude | 19.68 (0.2) | |||||||
| E(B-V) | 0.029 | |||||||
* 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.