All names: GALEX J175640.5+412547, Gaia DR3 1345049483546987904, WISEA J175640.60+412548.8, TIC 159850392, WISE J175640.60+412548.9, SDSS J175640.59+412549.0, UCAC4 658-063933, GALEXJ17566+4125, 2MASS J17564060+4125490, Gaia DR2 1345049483546987904, SDSS J175640.56+412549.2, SDSS J175640.60+412549.0
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 56 40.59 | 17 56 40.60 (0.02) | ||
| Declination | 41 25 47.93 | 41 25 49.01 (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] | 0.63 (0.03) | 0.77 (0.02) | |
| Distance | [pc] | 1595.91 (85) | 1291.66 (38) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.247 (0.06) | 3.195 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.821 (0.07) | -8.959 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.04 (0.02) | |||
| V magnitude | 14.29 (0.08) | |||
| R magnitude | 14.64 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.79 (0.03) | 14.79 (0.03) | ||
| H magnitude | 14.97 (0.06) | 14.97 (0.06) | ||
| K magnitude | 14.94 (0.09) | 14.94 (0.09) | ||
| u magnitude | 14.09 (0.003) | |||
| g magnitude | 14.12 (0.003) | 14.02 (0.04) | ||
| r magnitude | 14.82 (0.01) | 14.48 (0.04) | ||
| i magnitude | 14.83 (0.003) | 14.76 (0.1) | ||
| z magnitude | 14.99 (0.005) | |||
| G magnitude | 14.28 (0.0006) | 14.26 (0.003) | ||
| BP magnitude | 14.11 (0.006) | |||
| RP magnitude | 14.48 (0.003) | |||
| Pan g magnitude | 14.12 (0.01) | |||
| Pan r magnitude | 14.50 (0.005) | |||
| Pan i magnitude | 14.81 (0.001) | |||
| Pan z magnitude | 15.08 (0.004) | |||
| Pan y magnitude | 15.22 (0.004) | |||
| E(B-V) | 0.032 | |||
* 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.