All names: TIC 139360314, Gaia EDR3 900899734281274112, PG 0816+314, Gaia DR3 900899734281274112, SDSS J081935.93+311416.5, GALEX J081935.8+311416, 2MASS J08193587+3114164, Ton 313, UCAC4 607-042308, PG0816+314, Gaia DR2 900899734281274112
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 19 35.93 (0.05) | 08 19 35.92 | 08 19 35.93 (0.05) | ||
| Declination | 31 14 16.53 (0.03) | 31 14 16.92 | 31 14 16.58 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 32400.0 (1000) | |||
| log(g) | [cgs] | 5.99 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.71 (0.05) | 0.49 (0.09) | 0.71 (0.05) | |
| Distance | [pc] | 1418.24 (107) | 2046.66 (390) | 1418.24 (107) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.266 (0.05) | 1.111 (0.1) | 1.266 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.285 (0.04) | -3.38 (0.08) | -3.285 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.36 (0.05) | ||||
| V magnitude | 15.61 (0.06) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.28 (0.1) | 16.28 (0.1) | |||
| H magnitude | 16.11 (0.2) | 16.11 (0.2) | |||
| K magnitude | 15.91 | ||||
| u magnitude | 15.04 (0.004) | 15.02 (0.02) | |||
| g magnitude | 15.31 (0.004) | 15.35 (0.02) | |||
| r magnitude | 15.81 (0.004) | 15.83 (0.01) | |||
| i magnitude | 16.14 (0.005) | 16.17 (0.01) | |||
| z magnitude | 16.46 (0.009) | 16.45 (0.02) | |||
| G magnitude | 15.56 (0.003) | 15.58 (0.0009) | 15.56 (0.003) | ||
| BP magnitude | 15.42 (0.004) | 15.38 (0.01) | |||
| RP magnitude | 15.85 (0.005) | 15.84 (0.006) | |||
| Pan g magnitude | 15.39 (0.003) | ||||
| Pan r magnitude | 15.83 (0.001) | ||||
| Pan i magnitude | 16.18 (0.004) | ||||
| Pan z magnitude | 16.45 (0.006) | ||||
| Pan y magnitude | 16.63 (0.004) | ||||
| E(B-V) | 0.028 | ||||
* 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.