All names: WD 0839+380, GALEX J084218.7+374858, CBS 79, KUV 08391+3800, Gaia DR2 910370480767122304, SDSS J084218.73+374859.5, LAMOST J084218.71+374859.4, USNO-B1.0 1278-00210472, Gaia DR3 910370480767122304, Gaia EDR3 910370480767122304, SDSS J084218.71+374859.3, LAMOST J084218.72+374859.3, WD 0839+379, SDSS J084218.72+374859.33, SDSS J084218.72+374859.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 42 18.72 (0.04) | 08 42 18.74 | 08 42 18.72 (0.07) | 08 42 18.72 | 08 42 18.75 (0.04) | 08 42 18.48 | ||||||
| Declination | 37 48 59.17 (0.03) | 37 48 59.57 | 37 48 59.18 (0.05) | 37 48 59.17 | 37 48 59.63 (0.03) | 37 48 55.44 | ||||||
| Spectral type | DA | DA | DA | DA2.5 | DA | DA | ||||||
| Effective temperature | [K] | 19993.0 (57) | 19920.0 (372) | 19028.0 (283) | ||||||||
| log(g) | [cgs] | 8.39 (0.01) | 8.10 (0.06) | 8.15 (0.01) | ||||||||
| Mass | [M☉] | 0.847 (0.006) | 0.68 (0.03) | 0.712 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| 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] | 9.09 (0.06) | 9.16 (0.1) | 9.09 | 9.09 (0.06) | |||||||
| Distance | [pc] | 109.99 (0.7) | 109.17 (1) | 104.00 | 109.99 | 109.99 (0.7) | ||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -25.53954048 (0.05) | -25.54135601 (0.1) | -25.54 (0.06) | ||||||||
| Proper motion (declination) | [mas/yr] | -28.98404178 (0.05) | -28.7747925 (0.09) | -28.984 (0.05) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.00 | |||||||||||
| V magnitude | 16.32 | |||||||||||
| R magnitude | 16.20 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.25 (0.006) | 16.23 (0.02) | 16.25 (0.006) | |||||||||
| g magnitude | 16.13 (0.004) | 16.13 (0.03) | 16.13 (0.004) | |||||||||
| r magnitude | 16.50 (0.006) | 16.50 (0.02) | 16.50 (0.006) | |||||||||
| i magnitude | 16.80 (0.006) | 16.79 (0.03) | 16.80 (0.006) | |||||||||
| z magnitude | 17.05 (0.01) | 17.06 (0.02) | 17.05 (0.01) | |||||||||
| G magnitude | 16.33 (0.003) | 16.35 | 16.33 | 16.33 (0.003) | ||||||||
| BP magnitude | 16.26 (0.003) | 16.22 | ||||||||||
| RP magnitude | 16.49 (0.005) | 16.49 | ||||||||||
| Pan g magnitude | 16.18 (0.001) | |||||||||||
| Pan r magnitude | 16.51 (0.004) | |||||||||||
| Pan i magnitude | 16.80 (0.002) | |||||||||||
| Pan z magnitude | 17.05 (0.003) | |||||||||||
| Pan y magnitude | 17.25 (0.009) | |||||||||||
| E(B-V) | 0.004 | |||||||||||
* 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.