All names: Gaia DR3 1094879011629873920, Gaia DR2 1094879011629873920, PG 0749+658, UCAC4 779-021406, [TFW97] J075424.40+654207.36, FBS 0749+658, USNO-A2.0 1500-04938745, TIC 335634293, FBS B 766, FBS 0749+659, 2MASS J07542440+6542073, PG0749+658, GALEX J075424.3+654205
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 54 24.26 | 07 54 24.42 (0.05) | ||
| Declination | 65 42 06.56 | 65 42 07.37 (0.07) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 24600.0 (1000) | ||
| log(g) | [cgs] | 5.54 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 3.27 (0.1) | 3.32 (0.1) | |
| Distance | [pc] | 305.98 (10) | 300.78 (1e+01) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 19.676 (0.1) | 19.618 (0.06) | |
| Proper motion (declination) | [mas/yr] | 11.461 (0.2) | 11.605 (0.09) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.07 (0.1) | |||
| V magnitude | 12.06 (0.09) | |||
| R magnitude | 12.29 (0.07) | |||
| I magnitude | ||||
| J magnitude | 11.77 (0.02) | 11.77 (0.02) | ||
| H magnitude | 11.46 (0.03) | 11.46 (0.03) | ||
| K magnitude | 11.40 (0.02) | 11.40 (0.02) | ||
| u magnitude | 12.23 (0.002) | |||
| g magnitude | ||||
| r magnitude | 12.29 (0.001) | |||
| i magnitude | 12.49 (0.001) | |||
| z magnitude | 13.88 (0.01) | |||
| G magnitude | 12.07 (0.0003) | 12.06 (0.003) | ||
| BP magnitude | 12.00 (0.003) | |||
| RP magnitude | 12.05 (0.0009) | |||
| Pan g magnitude | 13.03 | |||
| Pan r magnitude | 12.70 | |||
| Pan i magnitude | 12.62 | |||
| Pan z magnitude | 12.62 | |||
| Pan y magnitude | 12.58 (0.003) | |||
| E(B-V) | 0.027 | |||
* 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.