All names: Gaia DR2 2032339977192239616, KPD1931+2911, TIC 379933594, UCAC2 42107540, KPD 1931+2911, 2MASS J19334918+2917474, UCAC4 597-083536, Gaia DR3 2032339977192239616
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 33 49.18 | 19 33 49.19 (0.02) | ||
| Declination | 29 17 47.59 | 29 17 47.36 (0.02) | ||
| Spectral type | sdO | sdO | ||
| 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] | 0.56 (0.03) | 0.59 (0.03) | |
| Distance | [pc] | 1786.67 (110) | 1699.81 (83) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.06 (0.06) | 0.069 (0.03) | |
| Proper motion (declination) | [mas/yr] | 1.999 (0.06) | 1.997 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.32 | |||
| V magnitude | 15.36 | |||
| R magnitude | 15.54 (0.08) | |||
| I magnitude | ||||
| J magnitude | 15.61 (0.06) | 15.61 (0.06) | ||
| H magnitude | 15.73 (0.2) | 15.73 (0.2) | ||
| K magnitude | 16.28 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.40 (0.0005) | 15.39 (0.003) | ||
| BP magnitude | 15.29 (0.007) | |||
| RP magnitude | 15.47 (0.003) | |||
| Pan g magnitude | 15.32 (0.002) | |||
| Pan r magnitude | 15.57 (0.002) | |||
| Pan i magnitude | 15.84 (0.002) | |||
| Pan z magnitude | 16.04 (0.004) | |||
| Pan y magnitude | 16.19 (0.004) | |||
| E(B-V) | 0.284 | |||
* 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.