All names: KUV04498+1727, UCAC4 538-010617, GALEX J045240.4+173144, TIC 436664952, 2MASS J04524039+1731445, Gaia DR2 3406444218653682560, LAMOST J045240.38+173144.5, Gaia DR3 3406444218653682560, KUV 04498+1727
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 52 40.39 | 04 52 40.39 (0.05) | ||
| Declination | 17 31 44.57 | 17 31 44.58 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 23550.0 (270) | ||
| log(g) | [cgs] | 5.16 (0.02) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.52 (0.07) | 0.54 (0.06) | |
| Distance | [pc] | 1936.48 (263) | 1855.29 (194) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.524 (0.1) | 0.527 (0.07) | |
| Proper motion (declination) | [mas/yr] | -3.601 (0.07) | -3.691 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.24 (0.05) | |||
| V magnitude | 16.11 (0.01) | |||
| R magnitude | 16.38 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.82 (0.07) | 15.82 (0.07) | ||
| H magnitude | 15.53 (0.1) | 15.53 (0.1) | ||
| K magnitude | 15.74 (0.3) | 15.74 (0.3) | ||
| u magnitude | ||||
| g magnitude | 16.27 (0.01) | |||
| r magnitude | 16.08 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.20 (0.0008) | 16.18 (0.003) | ||
| BP magnitude | 16.27 (0.005) | |||
| RP magnitude | 15.98 (0.004) | |||
| Pan g magnitude | 16.26 (0.002) | |||
| Pan r magnitude | 16.26 (0.007) | |||
| Pan i magnitude | 16.33 (0.003) | |||
| Pan z magnitude | 16.42 (0.004) | |||
| Pan y magnitude | 16.44 (0.009) | |||
| E(B-V) | 0.309 | |||
* 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.