All names: SDSS J024746.38+335424.7, Gaia DR2 139740918504773376, GALEX J024746.3+335424, Gaia EDR3 139740918504773376, SDSS J024746.38+335424.8, Gaia DR3 139740918504773376
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 47 46.39 (0.2) | 02 47 46.38 | 02 47 46.38 (0.3) | 02 47 46.39 | 02 47 46.36 (0.2) | 02 47 46.38 | |||
| Declination | 33 54 24.73 (0.2) | 33 54 24.77 | 33 54 24.73 (0.2) | 33 54 24.73 | 33 54 24.72 (0.2) | 33 54 24.78 | |||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 14144.0 (970) | 18301.0 (173) | ||||||
| log(g) | [cgs] | 7.67 (0.1) | 7.80 (0.03) | ||||||
| Mass | [M☉] | 0.441 (0.06) | 0.523 (0.01) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.45 (0.2) | 3.75 (0.3) | 3.45 | 3.45 (0.2) | ||||
| Distance | [pc] | 289.85 (19) | 266.65 (22) | 289.85 | 289.85 (19) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 18.32888351 (0.2) | 16.79503087 (0.8) | 18.329 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | 1.00683166 (0.2) | 0.519543673 (0.5) | 1.007 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.41 (0.02) | 18.41 (0.02) | 18.58 (0.02) | ||||||
| g magnitude | 18.12 (0.006) | 18.12 (0.006) | 18.27 (0.02) | ||||||
| r magnitude | 18.34 (0.008) | 18.34 (0.008) | 18.54 (0.02) | ||||||
| i magnitude | 18.51 (0.01) | 18.51 (0.01) | 18.72 (0.02) | ||||||
| z magnitude | 18.73 (0.04) | 18.73 (0.04) | 19.00 (0.04) | ||||||
| G magnitude | 18.50 (0.02) | 18.52 | 18.50 | 18.50 (0.003) | |||||
| BP magnitude | 18.25 (0.02) | 18.23 | |||||||
| RP magnitude | 18.36 (0.02) | 18.34 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.059 | ||||||||
* 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.