All names: GALEX J030554.7+282909, Gaia DR2 115962815619380096, LAMOST J030554.72+282908.9, 2MASS J03055472+2829089, LAMOSTJ030554.72+282908.9, UCAC4 593-007852, Gaia DR3 115962815619380096
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 05 54.72 | 03 05 54.73 (0.04) | ||
| Declination | 28 29 08.95 | 28 29 08.94 (0.04) | ||
| Spectral type | sdB | sdB/sdO | ||
| Effective temperature | [K] | 24688.0 (515) | ||
| log(g) | [cgs] | 5.22 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.44 (0.06) | 0.39 (0.05) | |
| Distance | [pc] | 2289.38 (338) | 2552.32 (294) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.86 (0.1) | 1.585 (0.07) | |
| Proper motion (declination) | [mas/yr] | -1.519 (0.1) | -1.426 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.71 (0.08) | |||
| V magnitude | 15.73 (0.09) | |||
| R magnitude | 16.09 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.79 (0.06) | 15.79 (0.06) | ||
| H magnitude | 15.64 (0.1) | 15.64 (0.1) | ||
| K magnitude | 15.78 (0.2) | 15.78 (0.2) | ||
| u magnitude | ||||
| g magnitude | 15.64 (0.01) | |||
| r magnitude | 15.87 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.69 (0.0007) | 15.67 (0.003) | ||
| BP magnitude | 15.63 (0.005) | |||
| RP magnitude | 15.69 (0.004) | |||
| Pan g magnitude | 15.62 (0.005) | |||
| Pan r magnitude | 15.82 (0.005) | |||
| Pan i magnitude | 16.03 (0.003) | |||
| Pan z magnitude | 16.21 (0.007) | |||
| Pan y magnitude | 16.30 (0.006) | |||
| E(B-V) | 0.157 | |||
* 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.