All names: FBS 0028+441, Gaia DR3 388536077471770368, HS 0028+4407, FBS B 207, UCAC4 673-002596, Gaia DR2 388536077471770368, HS0028+4407, TIC 191131926, UCAC2 46880012, 2MASS J00304373+4424327
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 30 43.75 | 00 30 43.73 (0.09) | ||
| Declination | 44 24 33.10 | 44 24 32.72 (0.08) | ||
| Spectral type | sdB+MS | sdB | ||
| 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] | 0.18 (0.1) | 0.30 (0.1) | |
| Distance | [pc] | 5440.70 (3745) | 3278.69 (1386) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.431 (0.2) | -2.492 (0.1) | |
| Proper motion (declination) | [mas/yr] | -5.172 (0.1) | -5.367 (0.09) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.47 (0.07) | |||
| V magnitude | 15.39 (0.07) | |||
| R magnitude | 15.52 (0.09) | |||
| I magnitude | ||||
| J magnitude | 14.63 (0.03) | 14.63 (0.03) | ||
| H magnitude | 14.30 (0.05) | 14.30 (0.05) | ||
| K magnitude | 14.31 (0.07) | 14.31 (0.07) | ||
| u magnitude | ||||
| g magnitude | 15.37 (0.08) | |||
| r magnitude | 15.35 (0.09) | |||
| i magnitude | 15.33 (0.06) | |||
| z magnitude | ||||
| G magnitude | 15.26 (0.0007) | 15.25 (0.003) | ||
| BP magnitude | 15.31 (0.005) | |||
| RP magnitude | 15.03 (0.002) | |||
| Pan g magnitude | 15.34 (0.002) | |||
| Pan r magnitude | 15.33 (0.003) | |||
| Pan i magnitude | 15.37 (0.003) | |||
| Pan z magnitude | 15.42 (0.004) | |||
| Pan y magnitude | 15.41 (0.005) | |||
| E(B-V) | 0.078 | |||
* 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.