All names: Gaia DR2 1977291346957976320, LAMOST J213827.14+461132.7, 2MASS J21382713+4611328, UCAC4 681-108722, Gaia DR3 1977291346957976320, LAMOSTJ213827.14+461132.7, TIC 276632217
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 38 27.15 | 21 38 27.15 (0.03) | ||
| Declination | 46 11 32.76 | 46 11 32.63 (0.03) | ||
| Spectral type | sdB | sdOB | ||
| Effective temperature | [K] | 29330.0 (300) | ||
| log(g) | [cgs] | 5.80 (0.09) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.65 (0.05) | 0.61 (0.03) | |
| Distance | [pc] | 1543.69 (118) | 1632.12 (90) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.134 (0.09) | -4.053 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.566 (0.09) | 1.471 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.31 (0.1) | |||
| V magnitude | 15.44 (0.01) | |||
| R magnitude | 16.27 (0.2) | |||
| I magnitude | ||||
| J magnitude | 16.23 (0.1) | 16.23 (0.1) | ||
| H magnitude | 16.63 | |||
| K magnitude | 15.47 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.16 (0.001) | 16.13 (0.003) | ||
| BP magnitude | 16.07 (0.006) | |||
| RP magnitude | 16.16 (0.005) | |||
| Pan g magnitude | 16.10 (0.004) | |||
| Pan r magnitude | 16.28 (0.01) | |||
| Pan i magnitude | 16.51 (0.002) | |||
| Pan z magnitude | 16.69 (0.004) | |||
| Pan y magnitude | 16.81 (0.007) | |||
| E(B-V) | 0.257 | |||
* 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.