All names: Gaia DR2 4012799764403658496, Gaia DR3 4012799764403658496, SDSS J120852.78+275427.1, GALEX J120852.7+275427, Gaia EDR3 4012799764403658496
| 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 52.75 (2) | 12 08 52.77 | 12 08 52.75 (6) | 12 08 52.78 (2) | 12 08 52.78 | ||||
| Declination | 27 54 27.08 (0.9) | 27 54 27.06 | 27 54 27.07 (2) | 27 54 26.94 (0.9) | 27 54 27.08 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 21311.0 (1036) | |||||||
| log(g) | [cgs] | 7.97 (0.2) | |||||||
| Mass | [M☉] | 0.61 (0.1) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.93 (2) | 0.93 (2) | ||||||
| Distance | [pc] | 1079.11 (1748) | 1079.10 (1748) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -22.79941133 (2) | -22.799 (2) | ||||||
| Proper motion (declination) | [mas/yr] | 8.786251154 (0.8) | 8.786 (0.8) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.56 (0.06) | 20.53 (0.07) | 20.53 (0.07) | ||||||
| g magnitude | 20.42 (0.02) | 20.48 (0.03) | 20.48 (0.03) | ||||||
| r magnitude | 20.81 (0.04) | 20.83 (0.04) | 20.83 (0.04) | ||||||
| i magnitude | 21.31 (0.1) | 21.31 (0.1) | 21.31 (0.1) | ||||||
| z magnitude | 21.52 (0.3) | 21.54 (0.3) | 21.54 (0.3) | ||||||
| G magnitude | 20.70 (0.2) | 20.74 | 20.70 (0.01) | ||||||
| BP magnitude | 20.57 (0.2) | 20.87 | |||||||
| RP magnitude | 20.88 (0.3) | 21.03 | |||||||
| Pan g magnitude | 20.52 (0.02) | ||||||||
| Pan r magnitude | 20.81 (0.02) | ||||||||
| Pan i magnitude | 21.02 (0.04) | ||||||||
| Pan z magnitude | 21.34 (0.1) | ||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.017 | ||||||||
* 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.