All names: 2MASS J21220555+2141114, Gaia DR3 1790728894004387712, UCAC4 559-133424, GALEX J212205.5+214111, Gaia EDR3 1790728894004387712, LAMOSTJ212205.57+214111.5, LAMOST J212205.58+214111.5, Gaia DR2 1790728889707996800, WISE J212205.56+214111.6
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 22 05.57 (0.04) | 21 22 05.59 | 21 22 05.57 (0.04) | ||
| Declination | 21 41 11.53 (0.03) | 21 41 11.53 | 21 41 11.57 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 27620.0 (180) | |||
| log(g) | [cgs] | 5.50 (0.02) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.89 (0.06) | 0.82 (0.07) | 0.89 (0.06) | |
| Distance | [pc] | 1120.82 (72) | 1216.55 (102) | 1120.82 (72) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.906 (0.06) | 2.204 (0.1) | 1.906 (0.06) | |
| Proper motion (declination) | [mas/yr] | -2.703 (0.04) | -2.944 (0.1) | -2.703 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.01 (0.01) | ||||
| V magnitude | 15.20 (0.01) | ||||
| R magnitude | 15.49 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 15.55 (0.05) | 15.55 (0.05) | |||
| H magnitude | 15.46 (0.1) | 15.46 (0.1) | |||
| K magnitude | 15.92 (0.3) | 15.92 (0.3) | |||
| u magnitude | |||||
| g magnitude | 15.02 (0.05) | ||||
| r magnitude | 15.38 (0.02) | ||||
| i magnitude | 15.55 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 15.16 (0.003) | 15.17 (0.0006) | 15.16 (0.003) | ||
| BP magnitude | 15.06 (0.003) | 15.03 (0.009) | |||
| RP magnitude | 15.31 (0.005) | 15.31 (0.005) | |||
| Pan g magnitude | 15.04 (0.001) | ||||
| Pan r magnitude | 15.35 (0.003) | ||||
| Pan i magnitude | 15.64 (0.003) | ||||
| Pan z magnitude | 15.88 (0.003) | ||||
| Pan y magnitude | 16.02 (0.005) | ||||
| E(B-V) | 0.073 | ||||
* 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.