All names: PG1115+201, PG 1115+201, CHSS 1871, [TFW97] J111834.79+194947.08, UBV M 43191, LAMOST J111834.78+194947.0, Gaia DR2 3978207002584425216, 2MASS J11183478+1949471, Ton 1384, Gaia DR3 3978207002584425216, uvby98 610071384, GEN# +6.10071384, TIC 3807867
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 11 18 34.86 | 11 18 34.78 (0.03) | ||
| Declination | 19 49 47.36 | 19 49 47.07 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 27941.0 (203) | ||
| log(g) | [cgs] | 5.32 (0.03) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.41 (0.07) | 1.34 (0.04) | |
| Distance | [pc] | 710.63 (33) | 745.32 (24) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -23.353 (0.1) | -23.426 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.557 (0.1) | -3.609 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.94 | |||
| V magnitude | 13.20 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.73 (0.02) | 13.73 (0.02) | ||
| H magnitude | 13.89 (0.04) | 13.89 (0.04) | ||
| K magnitude | 13.90 (0.04) | 13.90 (0.04) | ||
| u magnitude | 13.27 (0.003) | |||
| g magnitude | 13.08 (0.001) | |||
| r magnitude | 13.46 (0.001) | |||
| i magnitude | 14.34 (0.005) | |||
| z magnitude | 14.29 (0.007) | |||
| G magnitude | 13.17 (0.001) | 13.15 (0.003) | ||
| BP magnitude | 12.99 (0.02) | |||
| RP magnitude | 13.40 (0.002) | |||
| Pan g magnitude | 13.13 | |||
| Pan r magnitude | 13.40 (0.02) | |||
| Pan i magnitude | 13.73 (0.004) | |||
| Pan z magnitude | 14.00 (0.004) | |||
| Pan y magnitude | 14.17 (0.008) | |||
| E(B-V) | 0.018 | |||
* 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.