All names: KeplerJ190825+450832, Gaia DR2 2106246640496605824, GALEX J190824.7+450832, KIC 8874184, Gaia DR2 2106246636200088576, EQ J1908.4+4508, GALEX J190824.7+450831, TIC 158392049, Gaia DR3 2106246636200088576, 2MASS J19082473+4508321
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 08 25.00 | 19 08 24.75 (0.03) | ||
| Declination | 45 08 32.00 | 45 08 32.35 (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] | 0.50 (0.04) | ||
| Distance | [pc] | 1981.38 (170) | ||
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.463 (0.04) | ||
| Proper motion (declination) | [mas/yr] | 0.347 (0.05) | ||
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.17 (0.1) | 16.17 (0.1) | ||
| H magnitude | 15.78 (0.1) | 15.78 (0.1) | ||
| K magnitude | 15.36 (0.2) | 15.36 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 20.86 (0.03) | 16.36 (0.003) | ||
| BP magnitude | ||||
| RP magnitude | ||||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 21.59 (0.1) | |||
| Pan z magnitude | 20.86 (0.1) | |||
| Pan y magnitude | ||||
| E(B-V) | 0.035 | |||
* 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.