All names: Gaia DR3 706272634132053632, Gaia EDR3 706272634132053632, SDSS J084218.67+300558.9, GALEX J084218.7+300559, SDSS J084218.68+300559.0, Gaia DR2 706272634132053632, WD 0839+302, SDSS J084218.67+300559.0
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 42 18.69 (0.6) | 08 42 18.68 | 08 42 18.69 (0.8) | 08 42 18.69 (0.6) | 08 42 18.68 | 08 42 18.43 | 08 42 18.68 | |||
| Declination | 30 05 58.89 (0.3) | 30 05 59.00 | 30 05 58.89 (0.4) | 30 05 59.06 (0.3) | 30 05 59.01 | 30 05 55.32 | 30 05 59.01 | |||
| Spectral type | DA | DA_auto | DA | DA | DA | |||||
| Effective temperature | [K] | 23640.0 (1020) | 23497.0 (1106) | |||||||
| log(g) | [cgs] | 8.42 (0.2) | 8.50 (0.2) | |||||||
| Mass | [M☉] | 0.918 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.59 (0.7) | 0.29 (1) | 0.59 (0.7) | ||||||
| Distance | [pc] | 1686.91 (2113) | 3484.27 (12039) | 1686.91 (2113) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.614527948 (0.8) | -1.082427095 (2) | -1.615 (0.8) | ||||||
| Proper motion (declination) | [mas/yr] | -10.59548904 (0.5) | -10.80225462 (0.8) | -10.595 (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 | 20.19 (0.04) | 20.19 (0.04) | 20.17 (0.04) | 20.16 | 20.17 (0.04) | |||||
| g magnitude | 20.17 (0.02) | 20.17 (0.02) | 20.21 (0.03) | 20.21 | 20.21 (0.03) | |||||
| r magnitude | 20.54 (0.03) | 20.54 (0.04) | 20.57 (0.04) | 20.56 | 20.57 (0.04) | |||||
| i magnitude | 20.83 (0.06) | 20.83 (0.06) | 20.84 (0.06) | 20.84 | 20.85 (0.06) | |||||
| z magnitude | 21.35 (0.3) | 21.42 (0.3) | 21.44 (0.3) | 21.44 | 21.43 (0.3) | |||||
| G magnitude | 20.38 (0.06) | 20.44 | 20.38 (0.006) | |||||||
| BP magnitude | 20.26 (0.06) | 20.21 | ||||||||
| RP magnitude | 20.39 (0.1) | 20.37 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.024 | |||||||||
* 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.