All names: GALEX J081922.2+190955, Gaia DR3 663284100308467200, SDSSJ081922.29+190955.2, SDSS J081922.29+190955.1, Gaia DR2 663284100308467200
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 08 19 22.29 | 08 19 22.29 (0.5) | |
| Declination | 19 09 55.20 | 19 09 55.16 (0.3) | |
| Spectral type | sdB | sdB | |
| Effective temperature | [K] | ||
| log(g) | [cgs] | ||
| Mass | [M☉] | ||
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | -1.07 (0.9) | 0.51 (0.6) |
| Distance | [pc] | 1945.90 (2367) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -2.441 (1) | -2.176 (0.5) |
| Proper motion (declination) | [mas/yr] | -3.135 (1) | -2.867 (0.4) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 19.86 (0.04) | 19.86 (0.04) | |
| g magnitude | 19.88 (0.02) | 19.88 (0.02) | |
| r magnitude | 20.20 (0.03) | 20.20 (0.03) | |
| i magnitude | 20.43 (0.04) | 20.43 (0.04) | |
| z magnitude | 20.41 (0.2) | 20.41 (0.2) | |
| G magnitude | 20.10 (0.006) | 20.03 (0.005) | |
| BP magnitude | 19.81 (0.04) | ||
| RP magnitude | 19.89 (0.1) | ||
| Pan g magnitude | 19.94 (0.02) | ||
| Pan r magnitude | 20.24 (0.01) | ||
| Pan i magnitude | 20.43 (0.01) | ||
| Pan z magnitude | 20.46 (0.05) | ||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.