All names: TIC 425045078, Gaia EDR3 6826626049116784896, EC 21567-1732, Gaia DR3 6826626049116784896, 2MASS J21593015-1718216, Gaia DR2 6826626049116784896, GALEX J215930.0-171821, HE2156-1732, HE 2156-1732
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 59 30.15 (0.04) | 21 59 30.13 | 21 59 30.15 (0.04) | ||
| Declination | -17 18 21.75 (0.04) | -17 18 21.60 | -17 18 21.62 (0.04) | ||
| Spectral type | sdB | sdB+F | |||
| 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] | 0.70 (0.04) | 0.70 (0.07) | 0.70 (0.04) | |
| Distance | [pc] | 1427.14 (88) | 1437.40 (140) | 1427.14 (88) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.23 (0.05) | -0.277 (0.1) | -0.23 (0.05) | |
| Proper motion (declination) | [mas/yr] | -7.778 (0.04) | -7.696 (0.1) | -7.778 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.84 | ||||
| V magnitude | 15.07 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.57 (0.06) | 15.57 (0.06) | |||
| H magnitude | 15.58 (0.1) | 15.58 (0.1) | |||
| K magnitude | 15.66 (0.2) | 15.66 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.01 (0.003) | 15.04 (0.0008) | 15.01 (0.003) | ||
| BP magnitude | 14.89 (0.004) | 14.85 (0.01) | |||
| RP magnitude | 15.25 (0.005) | 15.25 (0.002) | |||
| Pan g magnitude | 14.87 (0.001) | ||||
| Pan r magnitude | 15.24 (0.0005) | ||||
| Pan i magnitude | 15.60 (0.002) | ||||
| Pan z magnitude | 15.85 (0.004) | ||||
| Pan y magnitude | 16.01 (0.007) | ||||
| E(B-V) | 0.022 | ||||
* 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.