All names: UCAC4 163-210120, Gaia DR3 6448384978192643200, 2MASS J19402872-5730377, Gaia DR2 6448384978192643200, GALEX J194028.7-573037, EC19363-5737, EC 19363-5737
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 40 28.82 | 19 40 28.73 (0.04) | ||
| Declination | -57 30 38.70 | -57 30 37.91 (0.04) | ||
| 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] | 0.35 (0.09) | 0.33 (0.06) | |
| Distance | [pc] | 2828.05 (733) | 3076.92 (575) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.201 (0.1) | -3.238 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.184 (0.1) | 0.182 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.55 (0.06) | |||
| V magnitude | 16.55 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.50 (0.1) | 16.50 (0.1) | ||
| H magnitude | 16.53 | |||
| K magnitude | 17.25 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.46 (0.001) | 16.44 (0.003) | ||
| BP magnitude | 16.36 (0.007) | |||
| RP magnitude | 16.53 (0.007) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.041 | |||
* 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.