All names: GALEX J210825.4+225111, Gaia DR3 1840008592843989888, SDSSJ210825.47+225111.1, SDSS J210825.47+225111.1, 2MASS J21082548+2251110, TIC 279470054, Gaia DR2 1840008592843989888
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 08 25.47 | 21 08 25.48 (0.03) | ||
| Declination | 22 51 11.18 | 22 51 11.23 (0.03) | ||
| Spectral type | sd | sd | ||
| 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] | 0.56 (0.08) | 0.42 (0.04) | |
| Distance | [pc] | 1781.90 (257) | 2364.07 (237) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.808 (0.1) | -1.926 (0.04) | |
| Proper motion (declination) | [mas/yr] | -5.356 (0.1) | -5.25 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.02 (0.1) | 16.02 (0.1) | ||
| H magnitude | 16.19 | |||
| K magnitude | 15.85 | |||
| u magnitude | 15.47 (0.005) | 15.48 (0.02) | ||
| g magnitude | 15.50 (0.003) | 15.52 (0.01) | ||
| r magnitude | 15.83 (0.003) | 15.85 (0.009) | ||
| i magnitude | 16.07 (0.004) | 16.07 (0.01) | ||
| z magnitude | 16.32 (0.009) | 16.34 (0.02) | ||
| G magnitude | 15.71 (0.0009) | 15.69 (0.003) | ||
| BP magnitude | 15.58 (0.009) | |||
| RP magnitude | 15.81 (0.004) | |||
| Pan g magnitude | 15.60 (0.005) | |||
| Pan r magnitude | 15.87 (0.003) | |||
| Pan i magnitude | 16.14 (0.005) | |||
| Pan z magnitude | 16.36 (0.003) | |||
| Pan y magnitude | 16.50 (0.01) | |||
| E(B-V) | 0.130 | |||
* 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.