All names: SDSS J154545.56+013229.3, 2MASS J15454556+0132292, Gaia DR3 4422972684520542720, GALEX J154545.5+013229, SDSSJ154545.56+013229.3, UCAC4 458-058168, Gaia DR2 4422972684520542720
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 45 45.56 | 15 45 45.57 (0.05) | ||
| Declination | 01 32 29.29 | 01 32 29.35 (0.05) | ||
| 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] | 0.38 (0.1) | 0.28 (0.08) | |
| Distance | [pc] | 2629.50 (687) | 3586.80 (978) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.312 (0.2) | -5.713 (0.08) | |
| Proper motion (declination) | [mas/yr] | 0.564 (0.1) | 0.76 (0.07) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.95 (0.1) | |||
| V magnitude | 16.63 (0.05) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.62 (0.07) | 15.62 (0.07) | ||
| H magnitude | 15.10 (0.09) | 15.10 (0.09) | ||
| K magnitude | 14.99 (0.1) | 14.99 (0.1) | ||
| u magnitude | 16.89 (0.008) | 16.89 (0.008) | ||
| g magnitude | 16.68 (0.004) | 16.71 (0.01) | ||
| r magnitude | 16.59 (0.005) | 16.61 (0.01) | ||
| i magnitude | 16.54 (0.005) | 17.01 (0.01) | ||
| z magnitude | 16.52 (0.01) | 16.52 (0.01) | ||
| G magnitude | 16.61 (0.003) | 16.59 (0.003) | ||
| BP magnitude | 16.71 (0.01) | |||
| RP magnitude | 16.27 (0.009) | |||
| Pan g magnitude | 16.73 (0.002) | |||
| Pan r magnitude | 16.66 (0.003) | |||
| Pan i magnitude | 16.64 (0.005) | |||
| Pan z magnitude | 16.61 (0.005) | |||
| Pan y magnitude | 16.59 (0.005) | |||
| E(B-V) | 0.063 | |||
* 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.