All names: GALEX J171945.4+515208, 2MASS J17194534+5152106, UCAC4 710-057798, TIC 188668744, Gaia DR3 1415898405068162176, Gaia DR2 1415898405067650816, PG1718+519, PG 1718+519
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 17 19 45.40 | 17 19 45.35 (0.8) | |
| Declination | 51 52 10.16 | 51 52 10.72 (0.7) | |
| Spectral type | sdB+G4V | sdB+G4V | |
| 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] | ||
| Distance | [pc] | ||
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -12.9 (2) | |
| Proper motion (declination) | [mas/yr] | 13.1 (1) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 13.86 (0) | ||
| V magnitude | 13.75 (0.09) | ||
| R magnitude | 13.81 (0.1) | ||
| I magnitude | |||
| J magnitude | 13.00 (0.02) | 13.00 (0.02) | |
| H magnitude | 12.72 (0.02) | 12.72 (0.02) | |
| K magnitude | 12.66 (0.03) | 12.66 (0.03) | |
| u magnitude | |||
| g magnitude | 13.74 (0.01) | ||
| r magnitude | 13.73 (0.04) | ||
| i magnitude | 13.74 (0.02) | ||
| z magnitude | |||
| G magnitude | 13.63 (0.001) | 13.80 (0.008) | |
| BP magnitude | 13.67 (0.003) | ||
| RP magnitude | 13.40 (0.001) | ||
| Pan g magnitude | 13.72 (0.005) | ||
| Pan r magnitude | 13.71 (0.001) | ||
| Pan i magnitude | 13.76 (0.005) | ||
| Pan z magnitude | 13.80 (0.004) | ||
| Pan y magnitude | 13.83 (0.003) | ||
| E(B-V) | |||
* 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.