All names: EQ J1940.5+4827, Gaia DR2 2128724231586262144, TIC 27394225, 2MASS J19403230+4827235, GALEX J194032.1+482724, KIC 10982905, KeplerJ19405+4827, Gaia DR3 2128724231586262144, GALEX J194032.2+482724
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 40 32.20 | 19 40 32.30 (0.02) | ||
| Declination | 48 27 24.00 | 48 27 23.54 (0.02) | ||
| Spectral type | sdB+F/G | sdB+F/G | ||
| 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] | 0.55 (0.03) | 0.53 (0.02) | |
| Distance | [pc] | 1803.10 (86) | 1900.78 (66) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.328 (0.05) | -0.182 (0.02) | |
| Proper motion (declination) | [mas/yr] | 3.379 (0.04) | 2.939 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.68 (0.02) | 13.68 (0.02) | ||
| H magnitude | 13.56 (0.03) | 13.56 (0.03) | ||
| K magnitude | 13.56 (0.04) | 13.56 (0.04) | ||
| u magnitude | ||||
| g magnitude | 14.09 | |||
| r magnitude | ||||
| i magnitude | 14.27 | |||
| z magnitude | ||||
| G magnitude | 14.05 (0.0004) | 14.04 (0.003) | ||
| BP magnitude | 14.06 (0.005) | |||
| RP magnitude | 13.93 (0.002) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 18.37 (0.2) | |||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.054 | |||
* 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.