All names: Gaia DR2 1794971943734173056, TIC 258021652, UCAC4 565-131573, GALEXJ21528+2252, GALEX J215253.6+225201, SDSS J215253.63+225201.2, 2MASS J21525362+2252012, UCAC2 39943705, WISE J215253.63+225201.6, Gaia DR3 1794971943734173056, WISEA J215253.63+225201.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 52 53.60 | 21 52 53.64 (0.03) | ||
| Declination | 22 52 01.29 | 22 52 01.28 (0.03) | ||
| 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] | 0.81 (0.06) | 0.81 (0.03) | |
| Distance | [pc] | 1231.22 (92) | 1235.94 (53) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.174 (0.1) | -3.974 (0.04) | |
| Proper motion (declination) | [mas/yr] | -1.076 (0.09) | -1.22 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.48 (0.04) | |||
| V magnitude | 14.66 (0.05) | |||
| R magnitude | 14.99 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.95 (0.03) | 14.95 (0.03) | ||
| H magnitude | 14.91 (0.06) | 14.91 (0.06) | ||
| K magnitude | 14.90 (0.1) | 14.90 (0.1) | ||
| u magnitude | 14.33 (0.004) | |||
| g magnitude | 14.43 (0.003) | 14.46 (0.04) | ||
| r magnitude | 14.85 (0.004) | 14.84 (0.06) | ||
| i magnitude | 15.13 (0.004) | 15.13 (0.1) | ||
| z magnitude | 15.39 (0.006) | |||
| G magnitude | 14.65 (0.0009) | 14.63 (0.003) | ||
| BP magnitude | 14.49 (0.01) | |||
| RP magnitude | 14.83 (0.003) | |||
| Pan g magnitude | 14.50 (0.004) | |||
| Pan r magnitude | 14.86 (0.001) | |||
| Pan i magnitude | 15.17 (0.0009) | |||
| Pan z magnitude | 15.39 (0.003) | |||
| Pan y magnitude | 15.54 (0.003) | |||
| E(B-V) | 0.063 | |||
* 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.