All names: SDSS J120829.10+193254.8, GALEX J120829.2+193255, Gaia EDR3 3951029957072049920, SDSS J120829.09+193254.8, Gaia DR3 3951029957072049920, Gaia DR2 3951029957072049920, SDSS J120829.10+193254.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 08 29.10 (0.4) | 12 08 29.10 | 12 08 29.10 (0.5) | 12 08 29.10 (0.4) | 12 08 29.10 | ||||
| Declination | 19 32 54.91 (0.4) | 19 32 54.83 | 19 32 54.91 (0.4) | 19 32 54.78 (0.4) | 19 32 54.88 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 24348.0 (553) | |||||||
| log(g) | [cgs] | 7.74 (0.08) | |||||||
| Mass | [M☉] | 0.513 (0.04) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.76 (0.5) | 0.50 (0.7) | 0.76 (0.5) | |||||
| Distance | [pc] | 1309.77 (873) | 2010.32 (2879) | 1309.76 (873) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.556387762 (0.5) | 2.174343413 (1) | 2.556 (0.5) | |||||
| Proper motion (declination) | [mas/yr] | 8.701309878 (0.5) | 9.364709642 (0.9) | 8.701 (0.5) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.50 (0.03) | 19.51 (0.05) | 19.51 (0.05) | ||||||
| g magnitude | 19.58 (0.01) | 19.59 (0.03) | 19.59 (0.03) | ||||||
| r magnitude | 20.02 (0.02) | 20.01 (0.02) | 20.01 (0.02) | ||||||
| i magnitude | 20.31 (0.03) | 20.29 (0.04) | 20.29 (0.04) | ||||||
| z magnitude | 20.54 (0.1) | 20.40 (0.09) | 20.40 (0.09) | ||||||
| G magnitude | 19.80 (0.05) | 19.84 | 19.80 (0.006) | ||||||
| BP magnitude | 19.81 (0.05) | 19.68 | |||||||
| RP magnitude | 19.96 (0.08) | 19.89 | |||||||
| Pan g magnitude | 19.66 (0.02) | ||||||||
| Pan r magnitude | 19.99 (0.008) | ||||||||
| Pan i magnitude | 20.26 (0.04) | ||||||||
| Pan z magnitude | 20.39 (0.04) | ||||||||
| Pan y magnitude | 19.80 (0.2) | ||||||||
| E(B-V) | 0.021 | ||||||||
* 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.