All names: TIC 284002879, WISE J212911.14+182751.4, SDSSJ212911.16+182750.8, 2MASS J21291116+1827506, SDSS J212911.16+182750.8, LAMOST J212911.17+182750.9, Gaia DR2 1786814181635379072, GALEX J212911.1+182750, Gaia DR3 1786814181635379072, UCAC4 543-143427
| 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.