All names: GALEX J184746.4+504134, Gaia DR2 2144566678012121728, TIC 48085434, Gaia DR3 2144566678012121728, GALEXJ18477+5041, UCAC4 704-060036, WISEA J184746.27+504134.8, WISE J184746.28+504134.9, 2MASS J18474628+5041348, GALEX J184746.3+504135
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 47 46.36 | 18 47 46.28 (0.02) | ||
| Declination | 50 41 35.56 | 50 41 34.89 (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] | 0.66 (0.03) | 0.73 (0.02) | |
| Distance | [pc] | 1515.84 (70) | 1360.54 (42) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.068 (0.06) | -2.143 (0.03) | |
| Proper motion (declination) | [mas/yr] | 2.549 (0.07) | 2.598 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.27 (0.07) | |||
| V magnitude | 14.58 (0.05) | |||
| R magnitude | 15.00 (0.06) | |||
| I magnitude | ||||
| J magnitude | 15.24 (0.05) | 15.24 (0.05) | ||
| H magnitude | 15.45 (0.09) | 15.45 (0.09) | ||
| K magnitude | 15.94 (0.4) | 15.94 (0.4) | ||
| u magnitude | ||||
| g magnitude | 14.28 (0.01) | |||
| r magnitude | 14.76 (0.07) | |||
| i magnitude | 15.08 (0.2) | |||
| z magnitude | ||||
| G magnitude | 14.65 (0.0006) | 14.63 (0.003) | ||
| BP magnitude | 14.46 (0.007) | |||
| RP magnitude | 14.87 (0.002) | |||
| Pan g magnitude | 14.46 (0.004) | |||
| Pan r magnitude | 14.86 (0.002) | |||
| Pan i magnitude | 15.21 (0.001) | |||
| Pan z magnitude | 15.46 (0.002) | |||
| Pan y magnitude | 15.63 (0.005) | |||
| E(B-V) | 0.036 | |||
* 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.