All names: GALEX J194059.7+553226, Gaia EDR3 2138776379201191936, TIC 424903953, Gaia DR3 2138776379201191936, GALEXJ19409+5532, UCAC4 728-063081, 2MASS J19405966+5532286, Gaia DR2 2138776379201191936
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 40 59.66 (0.03) | 19 40 59.75 | 19 40 59.67 (0.03) | ||
| Declination | 55 32 28.50 (0.03) | 55 32 26.84 | 55 32 28.68 (0.03) | ||
| 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] | 0.99 (0.03) | 0.93 (0.04) | 0.99 (0.03) | |
| Distance | [pc] | 1010.92 (28) | 1074.00 (46) | 1010.92 (28) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.7 (0.03) | -4.679 (0.08) | -4.7 (0.03) | |
| Proper motion (declination) | [mas/yr] | -11.697 (0.03) | -11.592 (0.09) | -11.697 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | 15.14 (0.3) | ||||
| I magnitude | |||||
| J magnitude | 15.32 (0.05) | 15.32 (0.05) | |||
| H magnitude | 15.41 (0.1) | 15.41 (0.1) | |||
| K magnitude | 15.20 (0.2) | 15.20 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.81 (0.003) | 14.83 (0.0007) | 14.81 (0.003) | ||
| BP magnitude | 14.69 (0.003) | 14.65 (0.005) | |||
| RP magnitude | 15.04 (0.004) | 15.04 (0.003) | |||
| Pan g magnitude | 14.68 (0.005) | ||||
| Pan r magnitude | 15.06 (0.001) | ||||
| Pan i magnitude | 15.38 (0.003) | ||||
| Pan z magnitude | 15.67 (0.003) | ||||
| Pan y magnitude | 15.83 (0.006) | ||||
| E(B-V) | 0.064 | ||||
* 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.