All names: PG1658+337, SDSS J170040.66+333748.00, Gaia EDR3 1337855099791936768, Gaia DR2 1337855099791936768, LAMOST J170040.65+333747.9, PG 1658+337, FBS B 590, SDSS J170040.66+333748.0, 2MASS J17004065+3337481, FBS 1658+337, SDSS J170040.65+333748.0, Gaia DR3 1337855099791936768, TIC 230226496
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 00 40.65 (0.03) | 17 00 40.66 | 17 00 40.67 | 17 00 40.65 (0.04) | 17 00 40.66 (0.03) | ||||
| Declination | 33 37 48.00 (0.03) | 33 37 48.07 | 33 37 48.37 | 33 37 48.00 (0.05) | 33 37 48.06 (0.03) | ||||
| Spectral type | sdB | DAB | sdB | ||||||
| Effective temperature | [K] | 26540.0 (940) | 30343.0 (91) | ||||||
| log(g) | [cgs] | 5.35 (0.2) | 5.48 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.42 (0.04) | 0.34 (0.05) | 0.34 (0.05) | 0.42 (0.04) | ||||
| Distance | [pc] | 2367.31 (197) | 2927.40 (427) | 2927.29 (427) | 2367.42 (197) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -5.963492657 (0.04) | -5.864 (0.08) | -5.863618248 (0.08) | -5.963 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -3.885379326 (0.04) | -3.802 (0.09) | -3.802444266 (0.09) | -3.885 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.73 | ||||||||
| V magnitude | 16.01 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.39 (0.1) | 16.39 (0.1) | |||||||
| H magnitude | 16.16 | ||||||||
| K magnitude | 15.36 | ||||||||
| u magnitude | 15.50 (0.004) | 15.50 (0.004) | 15.53 (0.01) | 15.50 (0.004) | |||||
| g magnitude | 15.66 (0.003) | 15.66 (0.003) | 15.68 (0.01) | 15.66 (0.003) | |||||
| r magnitude | 16.14 (0.004) | 16.14 (0.004) | 16.13 (0.01) | 16.14 (0.004) | |||||
| i magnitude | 16.48 (0.004) | 16.48 (0.004) | 16.47 (0.01) | 16.48 (0.004) | |||||
| z magnitude | 16.79 (0.01) | 16.79 (0.01) | 16.79 (0.02) | 16.79 (0.01) | |||||
| G magnitude | 15.91 (0.004) | 15.92 (0.001) | 15.92 | 15.91 (0.003) | |||||
| BP magnitude | 15.77 (0.004) | 15.71 (0.007) | 15.71 | ||||||
| RP magnitude | 16.17 (0.004) | 16.17 (0.004) | 16.17 | ||||||
| Pan g magnitude | 15.72 (0.002) | 15.72 (0.002) | |||||||
| Pan r magnitude | 16.15 (0.003) | 16.15 (0.003) | |||||||
| Pan i magnitude | 16.50 (0.003) | 16.50 (0.003) | |||||||
| Pan z magnitude | 16.76 (0.002) | 16.76 (0.002) | |||||||
| Pan y magnitude | 16.95 (0.005) | 16.95 (0.005) | |||||||
| E(B-V) | 0.023 | ||||||||
* 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.