All names: Gaia DR2 1598739247371147264, SDSS J154559.86+565020.6, Gaia DR3 1598739247371147264, GALEX J154559.6+565020, SDSS J154559.87+565020.6
| Parameter | Unit | Stilism | Simbad |
|---|---|---|---|
| Right ascension | 15 45 59.87 (0.4) | ||
| Declination | 56 50 20.56 (0.4) | ||
| Spectral type | DB | ||
| 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] | 1.88 (0.4) | |
| Distance | [pc] | 532.37 (115) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 9.291 (0.6) | |
| Proper motion (declination) | [mas/yr] | 5.08 (0.5) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 19.98 (0.04) | ||
| g magnitude | 20.00 (0.02) | ||
| r magnitude | 20.19 (0.02) | ||
| i magnitude | 20.38 (0.04) | ||
| z magnitude | 20.23 (0.2) | ||
| G magnitude | 20.08 (0.006) | ||
| BP magnitude | |||
| RP magnitude | |||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | 0.020 | ||
* 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.