All names: Gaia DR2 2686048087080526464, Gaia DR3 2686048087080526464, 2MASS J21242595-0122408, LAMOST J212425.94-012241.1, GALEXJ21244-0122, UCAC4 444-127109, LAMOST J212425.94-012241.0, GALEX J212425.9-012240, SDSS J212425.94-012241.1
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 24 25.96 | 21 24 25.95 (0.04) | ||
| Declination | -01 22 41.17 | -01 22 41.04 (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] | 0.58 (0.07) | 1.00 (0.04) | |
| Distance | [pc] | 1719.69 (214) | 997.80 (39) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -15.64 (0.1) | -15.563 (0.05) | |
| Proper motion (declination) | [mas/yr] | -20.794 (0.1) | -20.749 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.50 (0.02) | |||
| V magnitude | 14.69 (0.01) | |||
| R magnitude | 15.00 (0.2) | |||
| I magnitude | ||||
| J magnitude | 14.74 (0.05) | 14.74 (0.05) | ||
| H magnitude | 14.33 | |||
| K magnitude | 14.48 (0.09) | 14.48 (0.09) | ||
| u magnitude | 14.35 (0.003) | 14.35 (0.003) | ||
| g magnitude | 14.38 (0.003) | 14.45 (0.01) | ||
| r magnitude | 14.80 (0.003) | 14.82 (0.01) | ||
| i magnitude | 15.05 (0.003) | 15.15 (0.01) | ||
| z magnitude | 15.26 (0.005) | 15.26 (0.005) | ||
| G magnitude | 14.62 (0.0009) | 14.60 (0.003) | ||
| BP magnitude | 14.47 (0.008) | |||
| RP magnitude | 14.75 (0.002) | |||
| Pan g magnitude | 14.49 (0.003) | |||
| Pan r magnitude | 14.83 (0.001) | |||
| Pan i magnitude | 15.10 (0.002) | |||
| Pan z magnitude | 15.29 (0.003) | |||
| Pan y magnitude | 15.39 (0.008) | |||
| E(B-V) | 0.033 | |||
* 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.