All names: SDSS J042442.46+325059.4, GALEX J042442.4+325059, 2MASS J04244246+3250595, Gaia DR2 172497843798246912, UCAC4 615-014491, SDSSJ042442.46+325059.4, Gaia DR3 172497843798246912
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 24 42.46 | 04 24 42.46 (0.03) | ||
| Declination | 32 50 59.50 | 32 50 59.45 (0.02) | ||
| 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] | 0.03 (0.05) | 0.03 (0.05) | |
| Distance | [pc] | 35714.29 (66582) | 35714.29 (66582) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.239 (0.1) | 0.309 (0.05) | |
| Proper motion (declination) | [mas/yr] | -0.273 (0.08) | -0.339 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.97 (0.02) | |||
| V magnitude | 14.74 (0.01) | |||
| R magnitude | 15.01 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.42 (0.03) | 14.42 (0.03) | ||
| H magnitude | 14.38 (0.04) | 14.38 (0.04) | ||
| K magnitude | 14.31 (0.06) | 14.31 (0.06) | ||
| u magnitude | 15.52 (0.005) | 15.52 (0.005) | ||
| g magnitude | 14.78 (0.003) | 14.79 (0.01) | ||
| r magnitude | 14.81 (0.004) | 14.78 (0.01) | ||
| i magnitude | 14.90 (0.004) | 14.85 (0.01) | ||
| z magnitude | 14.99 (0.005) | 14.99 (0.005) | ||
| G magnitude | 14.81 (0.0007) | 14.79 (0.003) | ||
| BP magnitude | 14.86 (0.007) | |||
| RP magnitude | 14.60 (0.004) | |||
| Pan g magnitude | 14.88 (0.004) | |||
| Pan r magnitude | 14.86 (0.006) | |||
| Pan i magnitude | 14.97 (0.002) | |||
| Pan z magnitude | 15.04 (0.002) | |||
| Pan y magnitude | 15.07 (0.004) | |||
| E(B-V) | 0.336 | |||
* 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.