All names: Gaia DR3 1793956957063518080, UCAC4 562-131875, GALEX J213730.9+221908, GALEX J213730.9+221909, 2MASS J21373089+2219089, Gaia DR2 1793956957063518080, GALEXJ21375+2219
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 37 30.94 | 21 37 30.90 (0.03) | ||
| Declination | 22 19 09.80 | 22 19 08.93 (0.03) | ||
| Spectral type | sdB+G1V | sdB+G1V | ||
| Effective temperature | [K] | 36030.0 (760) | ||
| log(g) | [cgs] | 5.84 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.25 (0.04) | 1.48 (0.04) | |
| Distance | [pc] | 799.62 (23) | 676.27 (16) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -13.803 (0.06) | -14.072 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.629 (0.06) | -2.576 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.60 (0.06) | |||
| V magnitude | 13.53 (0.04) | |||
| R magnitude | 13.64 (0.09) | |||
| I magnitude | ||||
| J magnitude | 12.95 (0.03) | 12.95 (0.03) | ||
| H magnitude | 12.70 (0.03) | 12.70 (0.03) | ||
| K magnitude | 12.66 (0.03) | 12.66 (0.03) | ||
| u magnitude | 14.17 (0.005) | |||
| g magnitude | 14.59 (0.008) | 13.53 (0.06) | ||
| r magnitude | 13.62 (0.09) | |||
| i magnitude | 14.08 (0.004) | 13.67 (0.07) | ||
| z magnitude | 13.87 (0.006) | |||
| G magnitude | 13.44 (0.0006) | 13.42 (0.003) | ||
| BP magnitude | 13.44 (0.005) | |||
| RP magnitude | 13.29 (0.002) | |||
| Pan g magnitude | 13.48 (0.001) | |||
| Pan r magnitude | 13.56 (0.001) | |||
| Pan i magnitude | 13.65 (0.01) | |||
| Pan z magnitude | 13.72 (0.009) | |||
| Pan y magnitude | 13.73 (0.003) | |||
| E(B-V) | 0.063 | |||
* 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.