All names: Gaia EDR3 1964903763617638656, Gaia DR3 1964903763617638656, UCAC2 45412791, WISE J212042.02+385352.9, KPD 2118+3841, Gaia DR2 1964903763617638656, 2MASS J21204202+3853531, WISEA J212042.03+385352.9, KPD2118+3841, TIC 373441413, UCAC4 645-107171
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 20 42.03 (0.02) | 21 20 42.02 | 21 20 42.03 (0.02) | ||
| Declination | 38 53 52.97 (0.02) | 38 53 53.41 | 38 53 53.10 (0.02) | ||
| 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] | 1.68 (0.03) | 1.69 (0.04) | 1.68 (0.03) | |
| Distance | [pc] | 595.13 (9) | 592.56 (14) | 595.13 (9) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.534 (0.02) | 3.411 (0.06) | 3.534 (0.02) | |
| Proper motion (declination) | [mas/yr] | -8.032 (0.03) | -8.202 (0.06) | -8.032 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.68 (0.01) | ||||
| V magnitude | 13.85 (0.01) | ||||
| R magnitude | 14.05 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 14.31 (0.03) | 14.31 (0.03) | |||
| H magnitude | 14.38 (0.04) | 14.38 (0.04) | |||
| K magnitude | 14.47 (0.09) | 14.47 (0.09) | |||
| u magnitude | |||||
| g magnitude | 13.68 (0.01) | ||||
| r magnitude | 14.11 (0.01) | ||||
| i magnitude | 14.44 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 13.84 (0.003) | 13.85 (0.0005) | 13.84 (0.003) | ||
| BP magnitude | 13.72 (0.003) | 13.67 (0.005) | |||
| RP magnitude | 14.05 (0.004) | 14.05 (0.002) | |||
| Pan g magnitude | 13.69 (0.02) | ||||
| Pan r magnitude | 14.05 (0.002) | ||||
| Pan i magnitude | 14.38 (0.01) | ||||
| Pan z magnitude | 14.64 (0.003) | ||||
| Pan y magnitude | 14.80 (0.005) | ||||
| E(B-V) | 0.085 | ||||
* 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.