All names: Gaia DR3 2106726508604535680, GALEX J185757.9+444057, WISE J185758.01+444055.7, TIC 164726605, WISEA J185758.00+444055.6, O11J185758+444057, 2MASS J18575802+4440567, Gaia DR2 2106726508604535680, GALEX J185758.0+444057, UCAC4 674-067611
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 57 58.00 | 18 57 58.02 (0.03) | ||
| Declination | 44 40 57.00 | 44 40 56.88 (0.03) | ||
| Spectral type | sd | |||
| 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] | 0.26 (0.04) | 0.23 (0.03) | |
| Distance | [pc] | 3916.96 (680) | 4312.20 (630) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.419 (0.08) | -1.567 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.195 (0.08) | -8.213 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.60 (0.09) | |||
| V magnitude | 16.38 (0.1) | |||
| R magnitude | 16.14 (0.08) | |||
| I magnitude | ||||
| J magnitude | 15.79 (0.07) | 15.79 (0.07) | ||
| H magnitude | 15.63 (0.1) | 15.63 (0.1) | ||
| K magnitude | 15.40 | |||
| u magnitude | ||||
| g magnitude | 16.36 (0.01) | |||
| r magnitude | 16.49 (0.2) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.21 (0.0009) | 16.19 (0.003) | ||
| BP magnitude | 16.25 (0.004) | |||
| RP magnitude | 16.03 (0.003) | |||
| Pan g magnitude | 16.26 (0.004) | |||
| Pan r magnitude | 16.30 (0.004) | |||
| Pan i magnitude | 16.36 (0.003) | |||
| Pan z magnitude | 16.43 (0.007) | |||
| Pan y magnitude | 16.47 (0.005) | |||
| 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.