All names: Gaia EDR3 2858522974275824512, Gaia DR2 2858522974275824512, Gaia DR3 2858522974275824512, SDSS J003943.79+301035.71, SDSS J003943.79+301035.7, GALEX J003943.9+301035
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 39 43.80 (1) | 00 39 43.79 | 00 39 43.80 (1) | 00 39 43.80 (1) | ||||
| Declination | 30 10 35.72 (0.7) | 30 10 35.71 | 30 10 35.72 (0.8) | 30 10 35.87 (0.7) | ||||
| Spectral type | DA | DA | DA | |||||
| Effective temperature | [K] | 10527.0 (146) | ||||||
| log(g) | [cgs] | 7.88 (0.1) | ||||||
| Mass | [M☉] | 0.4429999999999999 (0.05) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.82 (1) | 1.54 (1) | 1.82 (1) | ||||
| Distance | [pc] | 550.83 (371) | 650.83 (545) | 550.84 (371) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 2.775267729 (2) | -0.991227889 (2) | 2.775 (2) | ||||
| Proper motion (declination) | [mas/yr] | -9.257277531 (1) | -11.97374483 (2) | -9.257 (1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.75 (0.3) | 21.73 (0.3) | 21.73 (0.3) | |||||
| g magnitude | 20.56 (0.03) | 20.58 (0.04) | 20.58 (0.04) | |||||
| r magnitude | 20.59 (0.05) | 20.64 (0.05) | 20.64 (0.05) | |||||
| i magnitude | 21.01 (0.1) | 21.06 (0.1) | 21.06 (0.1) | |||||
| z magnitude | 22.60 (1) | 22.59 (1) | ||||||
| G magnitude | 20.64 (0.1) | 20.72 | 20.64 (0.01) | |||||
| BP magnitude | 20.85 (0.1) | 20.91 | ||||||
| RP magnitude | 20.52 (0.09) | 20.78 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.057 | |||||||
* 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.