All names: Gaia DR2 1348118357938699648, 2MASS J17195022+4222079, SDSS J171950.24+422208.1, SDSS J171950.24+422208.0, SDSS J171950.24+422208.11, Gaia EDR3 1348118357938699648, TIC 459999534, GALEX J171950.2+422208, SDSS J171950.23+422208.1, SDSS J171950.24+422208.09, UCAC4 662-062240, SDSSJ171950.24+422208.09, Gaia DR3 1348118357938699648
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 19 50.23 (0.03) | 17 19 50.23 | 17 19 50.24 | 17 19 50.23 (0.04) | 17 19 50.24 (0.03) | |||||
| Declination | 42 22 07.95 (0.03) | 42 22 08.13 | 42 22 08.09 | 42 22 07.95 (0.04) | 42 22 08.11 (0.03) | |||||
| Spectral type | sdB | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 21501.0 (155) | 21501.0 (155) | 22744.0 (216) | ||||||
| log(g) | [cgs] | 5.61 (0.04) | 5.61 (0.04) | 5.00 (0.05) | ||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.15 (0.03) | 0.18 (0.04) | 0.18 (0.04) | 0.15 (0.03) | |||||
| Distance | [pc] | 6858.58 (1589) | 5624.30 (1420) | 5624.30 (1420) | 6858.71 (1590) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -7.501479381 (0.04) | -7.616 (0.09) | -7.616 (0.09) | -7.501 (0.04) | |||||
| Proper motion (declination) | [mas/yr] | -10.24746536 (0.04) | -10.334 (0.09) | -10.334 (0.09) | -10.247 (0.04) | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.80 (0.3) | |||||||||
| V magnitude | 15.99 (0.03) | |||||||||
| R magnitude | 16.20 (0.2) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.35 (0.1) | 16.35 (0.1) | ||||||||
| H magnitude | 16.62 | |||||||||
| K magnitude | 15.92 | |||||||||
| u magnitude | 15.99 (0.005) | 15.98 (0.005) | 16.01 (0.02) | 16.01 (0.02) | 15.98 (0.005) | |||||
| g magnitude | 15.76 (0.003) | 15.77 (0.003) | 15.79 (0.01) | 15.79 (0.02) | 15.69 (0.2) | |||||
| r magnitude | 16.15 (0.003) | 16.15 (0.003) | 16.16 (0.009) | 16.16 (0.01) | 16.16 (0.2) | |||||
| i magnitude | 16.44 (0.004) | 16.44 (0.004) | 16.45 (0.01) | 16.44 (0.01) | 16.44 (0.004) | |||||
| z magnitude | 16.68 (0.009) | 16.68 (0.009) | 16.69 (0.02) | 16.69 (0.02) | 16.68 (0.009) | |||||
| G magnitude | 15.98 (0.002) | 16.00 (0.001) | 16.00 | 15.98 (0.003) | ||||||
| BP magnitude | 15.90 (0.002) | 15.87 (0.006) | 15.87 | |||||||
| RP magnitude | 16.12 (0.005) | 16.12 (0.006) | 16.12 | |||||||
| Pan g magnitude | 15.84 (0.003) | 15.84 (0.003) | ||||||||
| Pan r magnitude | 16.17 (0.002) | 16.17 (0.002) | ||||||||
| Pan i magnitude | 16.47 (0.002) | 16.47 (0.002) | ||||||||
| Pan z magnitude | 16.69 (0.007) | 16.68 (0.007) | ||||||||
| Pan y magnitude | 16.79 (0.004) | 16.79 (0.004) | ||||||||
| E(B-V) | 0.029 | |||||||||
* 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.