All names: SDSSJ161556.98+173110.6, Gaia DR2 1198801380351795328, Gaia DR3 1198801380351795328, GALEX J161557.0+173110, SDSS J161556.97+173110.5, UCAC4 538-059527, 2MASS J16155697+1731105
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 15 56.98 | 16 15 56.98 (0.03) | ||
| Declination | 17 31 10.60 | 17 31 10.57 (0.03) | ||
| 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] | 0.25 (0.07) | 0.22 (0.04) | |
| Distance | [pc] | 3998.40 (1086) | 4576.66 (928) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.764 (0.08) | -2.835 (0.04) | |
| Proper motion (declination) | [mas/yr] | -6.689 (0.08) | -6.665 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.65 (0.07) | |||
| V magnitude | 16.27 (0.01) | |||
| R magnitude | 16.41 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.65 (0.05) | 15.65 (0.05) | ||
| H magnitude | 15.23 (0.09) | 15.23 (0.09) | ||
| K magnitude | 15.17 (0.1) | 15.17 (0.1) | ||
| u magnitude | 16.60 (0.007) | 16.60 (0.007) | ||
| g magnitude | 16.32 (0.004) | 16.34 (0.01) | ||
| r magnitude | 16.30 (0.004) | 16.25 (0.01) | ||
| i magnitude | 16.31 (0.004) | 16.31 (0.004) | ||
| z magnitude | 16.36 (0.008) | 16.36 (0.008) | ||
| G magnitude | 16.24 (0.0008) | 16.23 (0.003) | ||
| BP magnitude | 16.34 (0.005) | |||
| RP magnitude | 15.99 (0.003) | |||
| Pan g magnitude | 16.34 (0.002) | |||
| Pan r magnitude | 16.31 (0.004) | |||
| Pan i magnitude | 16.33 (0.003) | |||
| Pan z magnitude | 16.37 (0.004) | |||
| Pan y magnitude | 16.41 (0.004) | |||
| E(B-V) | 0.048 | |||
* 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.