All names: Gaia DR3 559439835566125952, GD 422, LP 30-79, Gaia DR2 559439835566125952, EGGR 468, USNO-B1.0 1656-00021200, WD 0159+754, Gaia EDR3 559439835566125952, WDJ020439.03+753818.97, TIC 137207272, 2MASS J02043901+7538190, LSPM J0204+7538S
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 04 39.58 (0.02) | 02 04 39.57 (0.04) | 02 04 39.58 | 02 04 39.03 (0.02) | 02 04 39.57 | 02 04 37.30 | ||||
| Declination | 75 38 17.32 (0.03) | 75 38 17.37 (0.03) | 75 38 17.32 | 75 38 18.97 (0.03) | 75 38 17.37 | 75 38 22.56 | ||||
| Spectral type | DA | DA | DA3.7 | DA | ||||||
| Effective temperature | [K] | 13740.0 (341) | 12979.0 (109) | |||||||
| log(g) | [cgs] | 7.96 (0.05) | 7.99 (0.007) | |||||||
| Mass | [M☉] | 0.59 (0.03) | 0.601 (0.005) | |||||||
| 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] | 16.17 (0.03) | 16.20 (0.05) | 16.17 | 16.17 (0.03) | 16.20 (0.05) | ||||
| Distance | [pc] | 61.85 (0.1) | 61.72 (0.2) | 84.00 | 61.85 | 61.85 (0.1) | 61.72 (0.2) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 128.6722508 (0.03) | 128.6056696 (0.07) | 128.672 (0.03) | 128.6056696 | |||||
| Proper motion (declination) | [mas/yr] | -103.1261645 (0.03) | -103.0406766 (0.07) | -103.126 (0.04) | -103.0406766 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.00 | |||||||||
| V magnitude | ||||||||||
| R magnitude | 15.80 | |||||||||
| I magnitude | ||||||||||
| J magnitude | 15.60 (0.07) | |||||||||
| H magnitude | 15.76 (0.2) | |||||||||
| K magnitude | 15.77 (0.2) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 15.50 (0.001) | 15.52 | 15.50 | 15.50 (0.003) | 15.52 | |||||
| BP magnitude | 15.50 (0.001) | 15.49 | 15.49 | |||||||
| RP magnitude | 15.56 (0.002) | 15.56 | 15.56 | |||||||
| Pan g magnitude | 15.43 (0.005) | |||||||||
| Pan r magnitude | 15.63 (0.001) | |||||||||
| Pan i magnitude | 15.87 (0.002) | |||||||||
| Pan z magnitude | 16.09 (0.006) | |||||||||
| Pan y magnitude | 16.24 (0.006) | |||||||||
| E(B-V) | 0.002 | |||||||||
* 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.