All names: 2MASS J08423648+5607223, SBSS 0838+562, SBSS 0838+563, TIC 445068376, SDSS J084236.49+560722.9, SBSS0838+563, GALEX J084236.4+560720, Gaia DR2 1031108642886941952, Gaia DR3 1031108642886941952
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 42 36.26 | 08 42 36.51 (0.04) | ||
| Declination | 56 07 20.49 | 56 07 22.59 (0.04) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.11 (0.09) | 0.04 (0.05) | |
| Distance | [pc] | 8912.66 (7173) | 24875.62 (33848) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.545 (0.1) | 0.488 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.601 (0.1) | -3.546 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.00 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.66 (0.1) | 16.66 (0.1) | ||
| H magnitude | 16.21 | |||
| K magnitude | 15.53 | |||
| u magnitude | 17.58 (0.01) | 17.58 (0.01) | ||
| g magnitude | 16.42 (0.003) | 16.42 (0.003) | ||
| r magnitude | 16.62 (0.004) | 16.62 (0.004) | ||
| i magnitude | 16.79 (0.005) | 16.79 (0.005) | ||
| z magnitude | 16.86 (0.01) | 16.86 (0.01) | ||
| G magnitude | 16.54 (0.0007) | 16.52 (0.003) | ||
| BP magnitude | 16.56 (0.005) | |||
| RP magnitude | 16.47 (0.006) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 20.71 (0.4) | |||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.038 | |||
* 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.