All names: 2MASS J19383247+5609446, TIC 424720852, GALEXJ19385+5609, Gaia DR3 2139043423087649536, GALEX J193832.5+560944, Gaia DR2 2139043423087649536
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 38 32.56 | 19 38 32.48 (0.02) | ||
| Declination | 56 09 44.33 | 56 09 44.57 (0.02) | ||
| 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] | 1.43 (0.03) | 1.39 (0.03) | |
| Distance | [pc] | 700.28 (17) | 717.15 (13) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.108 (0.07) | 2.021 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.348 (0.07) | -4.364 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.72 (0.03) | 13.72 (0.03) | ||
| H magnitude | 13.81 (0.04) | 13.81 (0.04) | ||
| K magnitude | 13.82 (0.05) | 13.82 (0.05) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.26 (0.0008) | 13.25 (0.003) | ||
| BP magnitude | 13.06 (0.005) | |||
| RP magnitude | 13.50 (0.002) | |||
| Pan g magnitude | 13.37 | |||
| Pan r magnitude | 13.54 (0.02) | |||
| Pan i magnitude | 13.84 (0.001) | |||
| Pan z magnitude | 14.10 (0.003) | |||
| Pan y magnitude | 14.25 (0.004) | |||
| E(B-V) | 0.044 | |||
* 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.