All names: KUV 04498+1727, KUV04498+1727, Gaia DR3 3406444218653682560, GALEX J045240.4+173144, UCAC4 538-010617, 2MASS J04524039+1731445, TIC 436664952, LAMOST J045240.38+173144.5, Gaia DR2 3406444218653682560
| 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.