All names: Gaia DR3 931805524373233280, Gaia EDR3 931805524373233280, GALEX J081942.8+490934, SDSS J081943.05+490934.81, SDSS J081943.05+490934.8, Gaia DR2 931805524373233280
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 19 43.05 (0.7) | 08 19 43.05 | 08 19 43.05 (1) | 08 19 43.07 (0.7) | ||||
| Declination | 49 09 34.29 (0.5) | 49 09 34.50 | 49 09 34.30 (0.6) | 49 09 34.57 (0.5) | ||||
| Spectral type | DA | DA | ||||||
| Effective temperature | [K] | 8808.0 (118) | ||||||
| log(g) | [cgs] | 8.08 (0.1) | ||||||
| Mass | [M☉] | 0.642 (0.08) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.58 (0.9) | 0.26 (1) | 0.58 (0.9) | ||||
| Distance | [pc] | 1714.75 (2612) | 3921.50 (18036) | 1714.68 (2612) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -8.62770338 (1) | -8.494980699 (2) | -8.628 (1) | ||||
| Proper motion (declination) | [mas/yr] | -17.21670791 (0.9) | -18.76270373 (1) | -17.217 (0.9) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.44 (0.1) | 21.46 (0.1) | 21.46 (0.1) | |||||
| g magnitude | 20.69 (0.03) | 20.72 (0.03) | 20.72 (0.03) | |||||
| r magnitude | 20.46 (0.04) | 20.49 (0.04) | 20.49 (0.04) | |||||
| i magnitude | 20.57 (0.05) | 20.60 (0.05) | 20.60 (0.05) | |||||
| z magnitude | 20.89 (0.3) | 20.96 (0.3) | 20.96 (0.3) | |||||
| G magnitude | 20.60 (0.1) | 20.66 | 20.60 (0.008) | |||||
| BP magnitude | 20.79 (0.1) | 20.55 | ||||||
| RP magnitude | 20.22 (0.2) | 19.95 | ||||||
| Pan g magnitude | 20.65 (0.02) | |||||||
| Pan r magnitude | 20.58 (0.03) | |||||||
| Pan i magnitude | 20.66 (0.03) | |||||||
| Pan z magnitude | 20.62 (0.05) | |||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.035 | |||||||
* 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.