All names: SDSS J220546.62-090952.3, Gaia DR3 2618918396783864064, GALEX J220546.6-090951, Gaia EDR3 2618918396783864064, SDSSJ220546.63-090952.3, Gaia DR2 2618918396783864064
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 05 46.63 (0.2) | 22 05 46.63 | 22 05 46.63 | 22 05 46.63 (0.4) | 22 05 46.63 (0.2) | 22 05 46.63 | ||
| Declination | -09 09 52.52 (0.3) | -09 09 52.39 | -09 09 52.30 | -09 09 52.52 (0.4) | -09 09 52.41 (0.3) | -09 09 52.37 | ||
| Spectral type | sdB | sdB | SDB: | |||||
| Effective temperature | [K] | 35220.0 (1034) | ||||||
| log(g) | [cgs] | 5.64 (0.2) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | -0.10 (0.3) | -0.21 (0.4) | -0.21 (0.4) | ||||
| Distance | [pc] | |||||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -0.903928411 (0.3) | -1.455 (0.6) | -1.455353988 (0.6) | -0.904 (0.3) | -0.8 | ||
| Proper motion (declination) | [mas/yr] | -6.719389863 (0.3) | -6.297 (0.6) | -6.296611753 (0.6) | -6.719 (0.3) | -4.7 | ||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.55 (0.02) | 18.55 (0.02) | 18.55 (0.02) | 18.48 (0.04) | ||||
| g magnitude | 18.79 (0.009) | 18.79 (0.009) | 18.79 (0.009) | 18.76 (0.03) | ||||
| r magnitude | 19.24 (0.02) | 19.24 (0.02) | 19.23 (0.01) | 19.24 (0.02) | ||||
| i magnitude | 19.64 (0.03) | 19.64 (0.03) | 19.53 (0.03) | 19.55 (0.03) | ||||
| z magnitude | 19.66 (0.09) | 19.66 (0.09) | 19.66 (0.09) | 19.79 (0.1) | ||||
| G magnitude | 19.01 (0.03) | 19.05 (0.004) | 19.05 | 19.01 (0.004) | ||||
| BP magnitude | 18.91 (0.03) | 18.81 (0.04) | 18.81 | |||||
| RP magnitude | 19.35 (0.05) | 19.19 (0.05) | 19.19 | |||||
| Pan g magnitude | 18.85 (0.008) | 18.85 (0.008) | ||||||
| Pan r magnitude | 19.26 (0.008) | 19.26 (0.008) | ||||||
| Pan i magnitude | 19.62 (0.01) | 19.62 (0.01) | ||||||
| Pan z magnitude | 19.87 (0.05) | 19.87 (0.05) | ||||||
| Pan y magnitude | 19.80 (0.3) | 19.80 (0.3) | ||||||
| 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.