All names: EQ J1920.8+3741, SDSS J192049.90+374138.8, Gaia DR3 2051099221763948416, Cl* NGC 6791 SBG 7021, [CBB2013b] 411, KeplerJ19208+3741, Cl* NGC 6791 KU B2, KIC 2297488, Gaia DR2 2051099221763948416
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 20 49.90 | 19 20 49.90 (0.05) | ||
| Declination | 37 41 39.00 | 37 41 38.83 (0.06) | ||
| Spectral type | sdO+F/G | sdO+F/G | ||
| Effective temperature | [K] | 40092.0 (1240) | ||
| log(g) | [cgs] | 5.45 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.08 (0.1) | 0.26 (0.07) | |
| Distance | [pc] | 11961.72 (17041) | 3855.05 (981) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.304 (0.2) | -0.44 (0.07) | |
| Proper motion (declination) | [mas/yr] | -2.049 (0.2) | -2.185 (0.07) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 17.25 (0.02) | |||
| V magnitude | 17.48 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 17.06 (0.009) | 17.07 (0.009) | ||
| g magnitude | 17.21 (0.005) | 17.32 (0.005) | ||
| r magnitude | 17.55 (0.006) | 17.52 (0.006) | ||
| i magnitude | 17.82 (0.007) | 17.81 (0.007) | ||
| z magnitude | 18.14 (0.03) | 18.14 (0.03) | ||
| G magnitude | 17.44 (0.002) | 17.41 (0.003) | ||
| BP magnitude | 17.28 (0.01) | |||
| RP magnitude | 17.53 (0.01) | |||
| Pan g magnitude | 17.32 (0.003) | |||
| Pan r magnitude | 17.61 (0.002) | |||
| Pan i magnitude | 17.92 (0.007) | |||
| Pan z magnitude | 18.12 (0.005) | |||
| Pan y magnitude | 18.29 (0.02) | |||
| E(B-V) | 0.104 | |||
* 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.