All names: 2MASS J07440005+2043596, TIC 62739767, SDSS J074400.00+204358.0, Gaia DR2 672947982884045696, Gaia EDR3 672947982884045696, GALEX J074400.0+204359
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|
| Right ascension | 07 44 00.01 (0.2) | 07 44 00.01 (0.2) | 07 44 00.05 (60) | 07 44 00.00 | ||
| Declination | 20 43 58.63 (0.1) | 20 43 58.60 (0.2) | 20 43 59.59 (60) | 20 43 58.04 | ||
| Spectral type | sdB+G | SDB+G | ||||
| Effective temperature | [K] | 7348.0 (42) | ||||
| log(g) | [cgs] | 7.82 (0.1) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 9.66 (0.2) | 10.03 (0.2) | |||
| Distance | [pc] | 103.52 (2) | 99.69 (2) | |||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 7.226334309 (0.2) | 6.880377401 (0.4) | |||
| Proper motion (declination) | [mas/yr] | 60.08536034 (0.2) | 60.41269249 (0.4) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 15.56 (0.05) | |||||
| H magnitude | 15.11 (0.07) | |||||
| K magnitude | 14.96 (0.09) | |||||
| u magnitude | 18.71 (0.02) | 18.74 (0.03) | ||||
| g magnitude | 18.39 (0.008) | 18.38 (0.1) | ||||
| r magnitude | 18.03 (0.007) | 18.11 (0.2) | ||||
| i magnitude | 18.12 (0.009) | 18.18 (0.2) | ||||
| z magnitude | 18.49 (0.04) | 18.55 (0.3) | ||||
| G magnitude | 18.17 | 18.19 | ||||
| BP magnitude | ||||||
| RP magnitude | ||||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.003 | |||||
* 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.