All names: EC 21416-2200, Gaia DR3 6817905341360668928, UCAC2 23271984, UCAC4 342-197184, GALEXJ21444-2146, Gaia DR2 6817905341360668928, GALEX J214425.4-214630, PHL 120, 2MASS J21442560-2146300, TIC 25137423
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 44 25.47 | 21 44 25.60 (0.04) | ||
| Declination | -21 46 30.23 | -21 46 29.96 (0.04) | ||
| 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] | 0.26 (0.06) | 0.29 (0.05) | |
| Distance | [pc] | 3897.12 (963) | 3443.53 (545) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.685 (0.1) | -3.801 (0.05) | |
| Proper motion (declination) | [mas/yr] | -7.821 (0.1) | -7.902 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.39 (0.01) | |||
| V magnitude | 14.51 (0.02) | |||
| R magnitude | 14.85 (0.07) | |||
| I magnitude | ||||
| J magnitude | 15.06 (0.04) | 15.06 (0.04) | ||
| H magnitude | 15.30 (0.09) | 15.30 (0.09) | ||
| K magnitude | 15.25 (0.1) | 15.25 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.35 (0.04) | |||
| r magnitude | 14.75 (0.03) | |||
| i magnitude | 14.98 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.54 (0.0006) | 14.52 (0.003) | ||
| BP magnitude | 14.34 (0.009) | |||
| RP magnitude | 14.79 (0.002) | |||
| Pan g magnitude | 14.37 (0.003) | |||
| Pan r magnitude | 14.78 (0.002) | |||
| Pan i magnitude | 15.13 (0.001) | |||
| Pan z magnitude | 15.40 (0.003) | |||
| Pan y magnitude | 15.57 (0.005) | |||
| E(B-V) | 0.024 | |||
* 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.