All names: TIC 336010149, GALEX J181746.6+461619, GALEXJ18177+4616, WISE J181746.59+461621.5, 2MASS J18174658+4616219, Gaia DR3 2121513531246427392, Gaia DR2 2121513531246427392, UCAC4 682-060977, WISEA J181746.59+461621.6, Gaia EDR3 2121513531246427392
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 17 46.59 (0.03) | 18 17 46.69 | 18 17 46.59 (0.03) | ||
| Declination | 46 16 21.73 (0.03) | 46 16 19.25 | 46 16 21.91 (0.03) | ||
| 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] | 1.05 (0.03) | 1.09 (0.04) | 1.05 (0.03) | |
| Distance | [pc] | 953.38 (25) | 920.81 (32) | 953.38 (25) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.311 (0.03) | 0.276 (0.07) | 0.311 (0.03) | |
| Proper motion (declination) | [mas/yr] | -11.252 (0.03) | -11.237 (0.08) | -11.252 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.24 (0.05) | ||||
| V magnitude | 14.48 (0.02) | ||||
| R magnitude | 14.88 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.18 (0.04) | 15.18 (0.04) | |||
| H magnitude | 15.19 (0.08) | 15.19 (0.08) | |||
| K magnitude | 15.20 (0.1) | 15.20 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.19 (0.04) | ||||
| r magnitude | 14.69 (0.03) | ||||
| i magnitude | 15.02 (0.07) | ||||
| z magnitude | |||||
| G magnitude | 14.43 (0.003) | 14.44 (0.0008) | 14.43 (0.003) | ||
| BP magnitude | 14.27 (0.003) | 14.22 (0.006) | |||
| RP magnitude | 14.74 (0.004) | 14.74 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | 18.77 (0.003) | ||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| 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.