All names: UCAC4 297-004279, Gaia DR2 4884067247999184256, 2MASS J04075816-3046268, GALEX J040758.1-304627, EC 04059-3054, Gaia DR3 4884067247999184256, EC04059-3054
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 07 58.10 | 04 07 58.17 (0.03) | ||
| Declination | -30 46 26.40 | -30 46 26.65 (0.03) | ||
| 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] | 0.24 (0.05) | 0.26 (0.04) | |
| Distance | [pc] | 4151.10 (915) | 3886.51 (612) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 8.894 (0.08) | 8.904 (0.03) | |
| Proper motion (declination) | [mas/yr] | -19.669 (0.09) | -19.792 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.82 (0.3) | |||
| V magnitude | 16.45 (0.2) | |||
| R magnitude | 16.11 (0.3) | |||
| I magnitude | ||||
| J magnitude | 16.03 (0.09) | 16.03 (0.09) | ||
| H magnitude | 15.73 (0.1) | 15.73 (0.1) | ||
| K magnitude | 16.29 | |||
| u magnitude | ||||
| g magnitude | 16.44 (0.1) | |||
| r magnitude | 16.49 (0.1) | |||
| i magnitude | 16.59 (0.01) | |||
| z magnitude | ||||
| G magnitude | 16.35 (0.0008) | 16.33 (0.003) | ||
| BP magnitude | 16.43 (0.004) | |||
| RP magnitude | 16.15 (0.004) | |||
| Pan g magnitude | 16.41 (0.007) | |||
| Pan r magnitude | 16.43 (0.007) | |||
| Pan i magnitude | 16.48 (0.003) | |||
| Pan z magnitude | 16.55 (0.01) | |||
| Pan y magnitude | 16.53 (0.009) | |||
| E(B-V) | 0.011 | |||
* 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.