All names: SDSSJ082003.35+173914.2, Gaia DR2 656345533398638464, TIC 60257911, GALEX J082003.3+173914, 2MASS J08200336+1739141, EPIC 211823779, Gaia DR3 656345533398638464, SDSS J082003.35+173914.2, UCAC4 539-045185
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 20 03.35 | 08 20 03.36 (0.02) | ||
| Declination | 17 39 14.20 | 17 39 14.25 (0.02) | ||
| Spectral type | sdB+MS | sdOB+F2V | ||
| 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] | 0.41 (0.05) | 0.41 (0.03) | |
| Distance | [pc] | 2453.39 (306) | 2450.98 (167) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.316 (0.08) | -0.341 (0.03) | |
| Proper motion (declination) | [mas/yr] | -1.458 (0.05) | -1.46 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.37 (0.03) | |||
| V magnitude | 15.20 (0.1) | |||
| R magnitude | 15.20 (0.09) | |||
| I magnitude | ||||
| J magnitude | 14.71 (0.03) | 14.71 (0.03) | ||
| H magnitude | 14.60 (0.05) | 14.60 (0.05) | ||
| K magnitude | 14.46 (0.07) | 14.46 (0.07) | ||
| u magnitude | 15.51 (0.004) | 15.51 (0.004) | ||
| g magnitude | 15.13 (0.003) | 15.23 (0.05) | ||
| r magnitude | 15.16 (0.003) | 15.24 (0.06) | ||
| i magnitude | 15.24 (0.003) | 15.36 (0.2) | ||
| z magnitude | 15.31 (0.005) | 15.31 (0.005) | ||
| G magnitude | 15.11 (0.0005) | 15.09 (0.003) | ||
| BP magnitude | 15.17 (0.004) | |||
| RP magnitude | 14.92 (0.002) | |||
| Pan g magnitude | 15.15 (0.003) | |||
| Pan r magnitude | 15.19 (0.001) | |||
| Pan i magnitude | 15.25 (0.001) | |||
| Pan z magnitude | 15.34 (0.002) | |||
| Pan y magnitude | 15.38 (0.003) | |||
| E(B-V) | 0.034 | |||
* 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.