All names: Gaia DR2 1782619686510352128, Gaia EDR3 1782619686510352128, UCAC4 560-137936, HS2158+2137, GALEX J220046.2+215207, WISEA J220046.19+215206.0, TIC 297924924, Gaia DR3 1782619686510352128, 2MASS J22004620+2152058, LAMOST J220046.20+215205.9, HS 2158+2137, SDSS J220046.20+215206.0, UCAC2 39592248, WISE J220046.20+215206.1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 00 46.19 (0.03) | 22 00 46.30 | 22 00 46.21 (0.03) | ||
| Declination | 21 52 05.96 (0.02) | 21 52 06.69 | 21 52 06.02 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 32000.0 (800) | |||
| log(g) | [cgs] | 5.80 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.58 (0.04) | 1.59 (0.05) | 1.58 (0.04) | |
| Distance | [pc] | 631.67 (15) | 630.08 (21) | 631.67 (15) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -21.355 (0.04) | -21.374 (0.09) | -21.355 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.129 (0.03) | -4.291 (0.08) | -4.129 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.12 (0.02) | ||||
| V magnitude | 14.23 (0.01) | ||||
| R magnitude | 14.64 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 14.84 (0.05) | 14.84 (0.05) | |||
| H magnitude | 15.02 (0.09) | 15.02 (0.09) | |||
| K magnitude | 15.15 (0.2) | 15.15 (0.2) | |||
| u magnitude | 13.88 (0.003) | 13.97 (0.02) | |||
| g magnitude | 14.05 (0.003) | 14.08 (0.02) | |||
| r magnitude | 14.47 (0.004) | 14.51 (0.02) | |||
| i magnitude | 14.77 (0.004) | 14.78 (0.01) | |||
| z magnitude | 15.05 (0.005) | 15.05 (0.02) | |||
| G magnitude | 14.26 (0.003) | 14.28 (0.0008) | 14.26 (0.003) | ||
| BP magnitude | 14.16 (0.003) | 14.12 (0.01) | |||
| RP magnitude | 14.46 (0.004) | 14.47 (0.002) | |||
| Pan g magnitude | 14.13 (0.004) | ||||
| Pan r magnitude | 14.49 (0.004) | ||||
| Pan i magnitude | 14.80 (0.003) | ||||
| Pan z magnitude | 15.05 (0.003) | ||||
| Pan y magnitude | 15.21 (0.005) | ||||
| E(B-V) | 0.055 | ||||
* 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.