All names: Gaia DR2 4567834303554972288, UCAC4 557-059068, PG 1707+214, TIC 471013471, LAMOST J170932.61+212214.5, Gaia DR3 4567834303554972288, PG1707+214, GALEX J170932.6+212214, SDSS J170932.63+212214.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 09 32.62 | 17 09 32.63 (0.03) | ||
| Declination | 21 22 15.38 | 21 22 14.63 (0.03) | ||
| Spectral type | sd | sdOB | ||
| Effective temperature | [K] | 35690.0 (280) | ||
| log(g) | [cgs] | 5.80 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.59 (0.05) | 0.64 (0.04) | |
| Distance | [pc] | 1699.81 (138) | 1557.63 (96) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.938 (0.06) | 2.025 (0.03) | |
| Proper motion (declination) | [mas/yr] | -5.391 (0.07) | -5.478 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.43 (0.07) | |||
| V magnitude | 15.69 (0.1) | |||
| R magnitude | 16.08 (0.2) | |||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 15.11 (0.005) | 15.12 (0.02) | ||
| g magnitude | 15.36 (0.004) | 15.48 (0.05) | ||
| r magnitude | 15.82 (0.005) | 15.91 (0.1) | ||
| i magnitude | 16.17 (0.005) | 16.15 (0.01) | ||
| z magnitude | 16.47 (0.009) | 16.49 (0.02) | ||
| G magnitude | 15.61 (0.0007) | 15.59 (0.003) | ||
| BP magnitude | 15.40 (0.006) | |||
| RP magnitude | 15.84 (0.003) | |||
| Pan g magnitude | 15.44 (0.006) | |||
| Pan r magnitude | 15.84 (0.003) | |||
| Pan i magnitude | 16.17 (0.002) | |||
| Pan z magnitude | 16.43 (0.004) | |||
| Pan y magnitude | 16.60 (0.005) | |||
| E(B-V) | 0.041 | |||
* 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.