All names: UCAC4 543-143427, Gaia DR2 1786814181635379072, LAMOST J212911.17+182750.9, GALEX J212911.1+182750, WISE J212911.14+182751.4, 2MASS J21291116+1827506, TIC 284002879, Gaia DR3 1786814181635379072, SDSSJ212911.16+182750.8, SDSS J212911.16+182750.8
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 29 11.17 | 21 29 11.17 (0.05) | ||
| Declination | 18 27 50.98 | 18 27 50.83 (0.05) | ||
| Spectral type | sdB | sdA | ||
| Effective temperature | [K] | 19105.0 (32) | ||
| log(g) | [cgs] | 5.24 (0.04) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.35 (0.1) | 0.14 (0.07) | |
| Distance | [pc] | 2878.53 (1228) | 6939.63 (3299) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.383 (0.2) | -3.175 (0.07) | |
| Proper motion (declination) | [mas/yr] | -5.81 (0.2) | -5.871 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 16.33 (0.4) | |||
| I magnitude | ||||
| J magnitude | 16.68 (0.2) | 16.68 (0.2) | ||
| H magnitude | 17.25 | |||
| K magnitude | 16.14 | |||
| u magnitude | 16.72 (0.007) | 16.73 (0.007) | ||
| g magnitude | 16.24 (0.004) | 16.25 (0.004) | ||
| r magnitude | 16.53 (0.005) | 16.56 (0.005) | ||
| i magnitude | 16.78 (0.006) | 16.79 (0.006) | ||
| z magnitude | 16.94 (0.01) | 16.97 (0.01) | ||
| G magnitude | 16.44 (0.001) | 16.41 (0.003) | ||
| BP magnitude | 16.39 (0.01) | |||
| RP magnitude | 16.47 (0.005) | |||
| Pan g magnitude | 16.33 (0.004) | |||
| Pan r magnitude | 16.56 (0.004) | |||
| Pan i magnitude | 16.80 (0.004) | |||
| Pan z magnitude | 16.99 (0.005) | |||
| Pan y magnitude | 17.07 (0.009) | |||
| E(B-V) | 0.067 | |||
* 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.