All names: TIC 259699877, UCAC4 205-005317, GALEX J045709.4-490212, EC04558-4906, Gaia DR2 4785577119551899904, EC 04558-4906, Gaia DR3 4785577119551899904, 2MASS J04570946-4902124
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 57 09.50 | 04 57 09.50 (0.03) | ||
| Declination | -49 02 12.70 | -49 02 12.42 (0.04) | ||
| Spectral type | sdB+F | sdB+F | ||
| 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] | 0.23 (0.05) | 0.22 (0.04) | |
| Distance | [pc] | 4271.68 (907) | 4537.21 (832) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.262 (0.09) | 5.379 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.71 (0.1) | 1.684 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.38 (0.03) | |||
| V magnitude | 16.21 (0.03) | |||
| R magnitude | 15.95 (0.2) | |||
| I magnitude | ||||
| J magnitude | 16.01 (0.1) | 16.01 (0.1) | ||
| H magnitude | 15.59 (0.1) | 15.59 (0.1) | ||
| K magnitude | 15.08 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.24 (0.001) | 16.21 (0.003) | ||
| BP magnitude | 16.26 (0.007) | |||
| RP magnitude | 16.10 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.012 | |||
* 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.