All names: 2MASS J19164536+7014542, HS 1917+7009, HS1917+7009, Gaia DR3 2262558195662392960, TIC 258924365, Gaia DR2 2262558195662392960, GALEX J191645.5+701454, UCAC4 802-026694
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 16 45.33 | 19 16 45.34 (0.02) | ||
| Declination | 70 14 54.89 | 70 14 54.34 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 27600.0 (700) | ||
| log(g) | [cgs] | 5.35 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.79 (0.03) | 0.75 (0.02) | |
| Distance | [pc] | 1265.66 (51) | 1327.67 (42) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.523 (0.06) | 2.728 (0.03) | |
| Proper motion (declination) | [mas/yr] | -12.576 (0.06) | -12.484 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.09 (0.02) | |||
| V magnitude | 15.20 (0.01) | |||
| R magnitude | 15.36 (0.08) | |||
| I magnitude | ||||
| J magnitude | 15.45 (0.06) | 15.45 (0.06) | ||
| H magnitude | 15.66 (0.2) | 15.66 (0.2) | ||
| K magnitude | 15.97 | |||
| u magnitude | ||||
| g magnitude | 14.98 (0.01) | |||
| r magnitude | 15.35 (0.01) | |||
| i magnitude | 15.50 (0.01) | |||
| z magnitude | ||||
| G magnitude | 15.17 (0.0006) | 15.15 (0.003) | ||
| BP magnitude | 15.06 (0.006) | |||
| RP magnitude | 15.24 (0.003) | |||
| Pan g magnitude | 15.08 (0.001) | |||
| Pan r magnitude | 15.33 (0.002) | |||
| Pan i magnitude | 15.57 (0.002) | |||
| Pan z magnitude | 15.78 (0.002) | |||
| Pan y magnitude | 15.92 (0.004) | |||
| E(B-V) | 0.072 | |||
* 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.