All names: PG1636+216, TIC 349401397, 2MASS J16382676+2132566, Gaia DR2 1297746981491158272, GALEX J163826.8+213257, SDSS J163826.76+213256.4, PG 1636+216, Gaia DR3 1297746981491158272
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 38 26.77 | 16 38 26.76 (0.02) | ||
| Declination | 21 32 56.82 | 21 32 56.40 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 34300.0 (1000) | ||
| log(g) | [cgs] | 5.76 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.84 (0.05) | 0.82 (0.03) | |
| Distance | [pc] | 1190.19 (67) | 1214.18 (50) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.309 (0.07) | 3.345 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.251 (0.07) | -4.421 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.74 | |||
| V magnitude | 14.40 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.49 (0.06) | 15.49 (0.06) | ||
| H magnitude | 15.82 (0.2) | 15.82 (0.2) | ||
| K magnitude | 15.72 (0.3) | 15.72 (0.3) | ||
| u magnitude | 14.32 (0.004) | 14.33 (0.02) | ||
| g magnitude | 14.57 (0.003) | 14.60 (0.01) | ||
| r magnitude | 15.07 (0.003) | 15.07 (0.01) | ||
| i magnitude | 15.41 (0.004) | 15.41 (0.01) | ||
| z magnitude | 15.73 (0.006) | 15.74 (0.01) | ||
| G magnitude | 14.85 (0.0006) | 14.84 (0.003) | ||
| BP magnitude | 14.63 (0.009) | |||
| RP magnitude | 15.10 (0.003) | |||
| Pan g magnitude | 14.68 (0.005) | |||
| Pan r magnitude | 15.09 (0.002) | |||
| Pan i magnitude | 15.45 (0.002) | |||
| Pan z magnitude | 15.71 (0.008) | |||
| Pan y magnitude | 15.89 (0.005) | |||
| E(B-V) | 0.041 | |||
* 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.