All names: USNO-B1.0 0974-00025562, TIC 336982348, Gaia DR2 2569316953353625472, 2MASS J02041384+0726297, SDSS J020413.87+072629.6, GD 23, Gaia DR3 2569316953353625472, GALEX J020413.8+072630, Gaia EDR3 2569316953353625472, SDSS J020413.87+072629.7, PB 6617, LAMOST J020413.86+072630.3
| Parameter | Unit | Gaia EDR3 | Guo et al. 2015 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|
| Right ascension | 02 04 13.92 (0.05) | 02 04 13.92 | 02 04 13.85 (0.05) | ||
| Declination | 07 26 30.02 (0.05) | 07 26 30.02 | 07 26 29.50 (0.05) | ||
| Spectral type | DA | DA | DA | ||
| Effective temperature | [K] | 19905.0 (99) | 18753.0 (404) | ||
| log(g) | [cgs] | 8.18 (0.02) | 8.09 (0.02) | ||
| Mass | [M☉] | 0.73 (0.01) | 0.673 (0.02) | ||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 8.63 (0.06) | 8.63 | 8.63 (0.06) | |
| Distance | [pc] | 115.82 (0.9) | 115.82 | 115.82 (0.9) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 57.864 (0.07) | 57.864 (0.07) | ||
| Proper motion (declination) | [mas/yr] | 32.47 (0.06) | 32.47 (0.06) | ||
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.40 | ||||
| V magnitude | |||||
| R magnitude | 16.30 | ||||
| I magnitude | |||||
| J magnitude | 16.81 (0.02) | ||||
| H magnitude | 16.91 (0.04) | ||||
| K magnitude | 16.99 (0.06) | ||||
| u magnitude | 16.28 (0.006) | ||||
| g magnitude | 16.18 (0.004) | ||||
| r magnitude | 16.54 (0.005) | ||||
| i magnitude | 16.81 (0.006) | ||||
| z magnitude | 17.09 (0.01) | ||||
| G magnitude | 16.37 (0.003) | 16.37 | 16.37 (0.003) | ||
| BP magnitude | 16.31 (0.004) | ||||
| RP magnitude | 16.54 (0.007) | ||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | |||||
* 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.