All names: FBS 0738+640, 2MASS J07424830+6353243, TIC 309924270, Gaia DR2 1088594031363950592, GALEXJ07428+6353, Gaia DR3 1088594031363950592, GALEX J074248.3+635323, FBS B 659
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 42 48.31 | 07 42 48.30 (0.04) | ||
| Declination | 63 53 23.42 | 63 53 24.43 (0.04) | ||
| Spectral type | sdO+G | sdO+G | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.64 (0.04) | 1.50 (0.06) | |
| Distance | [pc] | 1559.58 (105) | 664.63 (25) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.552 (0.06) | -3.224 (0.05) | |
| Proper motion (declination) | [mas/yr] | -37.993 (0.06) | -37.149 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | 13.30 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.39 (0.03) | 13.39 (0.03) | ||
| H magnitude | 13.17 (0.04) | 13.17 (0.04) | ||
| K magnitude | 13.01 (0.03) | 13.01 (0.03) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.52 (0.0006) | 13.51 (0.003) | ||
| BP magnitude | 13.40 (0.007) | |||
| RP magnitude | 13.56 (0.001) | |||
| Pan g magnitude | 13.46 (0.001) | |||
| Pan r magnitude | 13.75 (0.02) | |||
| Pan i magnitude | 13.89 (0.003) | |||
| Pan z magnitude | 14.03 (0.004) | |||
| Pan y magnitude | 14.10 (0.003) | |||
| E(B-V) | 0.046 | |||
* 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.