All names: PG1632+001, 2MASS J16343878+0000592, PG 1632+001, GALEX J163438.8+000059, SDSS J163438.78+000059.2, Gaia DR2 4383459878751491968, TIC 57994394, Gaia DR3 4383459878751491968
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 34 38.80 | 16 34 38.78 (0.05) | ||
| Declination | 00 00 59.87 | 00 00 59.24 (0.02) | ||
| Spectral type | sdB | 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] | 0.06 (0.08) | 0.25 (0.06) | |
| Distance | [pc] | 17761.99 (24261) | 4050.22 (917) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.133 (0.2) | -0.201 (0.06) | |
| Proper motion (declination) | [mas/yr] | -10.122 (0.09) | -9.94 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.86 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.26 (0.1) | 16.26 (0.1) | ||
| H magnitude | 15.73 (0.1) | 15.73 (0.1) | ||
| K magnitude | 16.05 | |||
| u magnitude | 15.36 (0.004) | 15.37 (0.01) | ||
| g magnitude | 15.61 (0.004) | 15.64 (0.008) | ||
| r magnitude | 16.03 (0.004) | 16.04 (0.007) | ||
| i magnitude | 16.32 (0.005) | 16.31 (0.007) | ||
| z magnitude | 16.57 (0.009) | 16.56 (0.01) | ||
| G magnitude | 15.84 (0.0006) | 15.82 (0.003) | ||
| BP magnitude | 15.64 (0.007) | |||
| RP magnitude | 15.99 (0.004) | |||
| Pan g magnitude | 15.71 (0.003) | |||
| Pan r magnitude | 16.06 (0.003) | |||
| Pan i magnitude | 16.33 (0.004) | |||
| Pan z magnitude | 16.53 (0.002) | |||
| Pan y magnitude | 16.66 (0.005) | |||
| E(B-V) | 0.098 | |||
* 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.