All names: SDSS J174508.72+434238.0, GALEX J174508.7+434237, SDSSJ174508.72+434238.2, Gaia DR2 1349073107692934016, SDSS J174508.72+434238.2, Gaia DR3 1349073107692934016
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 45 08.73 | 17 45 08.73 (0.03) | ||
| Declination | 43 42 37.96 | 43 42 38.04 (0.04) | ||
| Spectral type | sd | 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] | 0.30 (0.06) | 0.33 (0.04) | |
| Distance | [pc] | 3298.15 (635) | 3066.54 (369) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.671 (0.1) | -3.624 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.867 (0.1) | 0.886 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.63 (0.1) | |||
| H magnitude | 15.95 | |||
| K magnitude | 15.81 | |||
| u magnitude | 15.37 (0.005) | 15.37 (0.005) | ||
| g magnitude | 15.74 (0.004) | 15.74 (0.004) | ||
| r magnitude | 16.23 (0.005) | 16.23 (0.005) | ||
| i magnitude | 16.50 (0.005) | 16.50 (0.005) | ||
| z magnitude | 16.91 (0.01) | 16.91 (0.01) | ||
| G magnitude | 16.02 (0.002) | 16.00 (0.003) | ||
| BP magnitude | 15.78 (0.008) | |||
| RP magnitude | 16.29 (0.006) | |||
| Pan g magnitude | 15.84 (0.004) | |||
| Pan r magnitude | 16.28 (0.002) | |||
| Pan i magnitude | 16.63 (0.003) | |||
| Pan z magnitude | 16.92 (0.004) | |||
| Pan y magnitude | 17.09 (0.01) | |||
| E(B-V) | 0.031 | |||
* 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.