All names: Gaia DR2 2501511789255397248, Gaia DR3 2501511789255397248, GALEX J022454.8+010938, GALEXJ022454.87+010938.81, TIC 420049852, 2MASS J02245476+0109394, WISE J022454.77+010939.3, LAMOST J022454.75+010939.7, UCAC4 456-003075
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 02 24 54.87 | 02 24 54.77 (0.03) | ||
| Declination | 01 09 38.81 | 01 09 39.55 (0.02) | ||
| Spectral type | sdB+F4V | sdB+F4V | ||
| Effective temperature | [K] | 28000.0 (1020) | ||
| log(g) | [cgs] | 5.45 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.64 (0.05) | 1.60 (0.03) | |
| Distance | [pc] | 611.32 (18) | 625.43 (10) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 15.419 (0.09) | 15.907 (0.03) | |
| Proper motion (declination) | [mas/yr] | -20.464 (0.08) | -20.364 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.36 (0.03) | |||
| V magnitude | 12.18 (0.02) | |||
| R magnitude | 12.25 (0.09) | |||
| I magnitude | ||||
| J magnitude | 11.64 (0.02) | 11.64 (0.02) | ||
| H magnitude | 11.46 (0.03) | 11.46 (0.03) | ||
| K magnitude | 11.43 (0.02) | 11.43 (0.02) | ||
| u magnitude | 14.16 (0.005) | |||
| g magnitude | 12.21 (0.03) | |||
| r magnitude | 14.70 (0.01) | 12.21 (0.03) | ||
| i magnitude | 12.20 (0.001) | 12.19 (0.1) | ||
| z magnitude | 13.46 (0.006) | |||
| G magnitude | 12.13 (0.0003) | 12.12 (0.003) | ||
| BP magnitude | 12.20 (0.004) | |||
| RP magnitude | 11.92 (0.002) | |||
| Pan g magnitude | 12.41 | |||
| Pan r magnitude | 12.28 | |||
| Pan i magnitude | 12.30 | |||
| Pan z magnitude | 12.37 | |||
| Pan y magnitude | 12.37 (0.006) | |||
| E(B-V) | 0.030 | |||
* 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.