All names: LSPM J0856+7842, USNO-B1.0 1687-00039847, Gaia EDR3 1143939598415174144, WDJ085619.37+784219.77, Gaia DR2 1143939598415174144, Gaia DR3 1143939598415174144
| Parameter | Unit | Gaia EDR3 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|
| Right ascension | 08 56 18.60 (0.2) | 08 56 18.60 | 08 56 19.37 (0.2) | 08 56 18.63 | ||
| Declination | 78 42 18.10 (0.2) | 78 42 18.10 | 78 42 19.77 (0.2) | 78 42 18.15 | ||
| Spectral type | DA: | DA | ||||
| Effective temperature | [K] | 4858.0 (113) | ||||
| log(g) | [cgs] | 7.95 (0.06) | ||||
| Mass | [M☉] | 0.546 (0.05) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 12.70 (0.2) | 12.70 | 12.70 (0.2) | 12.71 (0.3) | |
| Distance | [pc] | 78.73 (1) | 78.73 | 78.73 (1) | 78.69 (2) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -139.7705194 (0.2) | -139.771 (0.2) | -139.8060853 | ||
| Proper motion (declination) | [mas/yr] | -104.3557144 (0.3) | -104.356 (0.3) | -104.3548009 | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 20.80 | |||||
| V magnitude | ||||||
| R magnitude | 19.20 | |||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 19.46 (0.06) | 19.46 | 19.46 (0.004) | 19.50 | ||
| BP magnitude | 19.97 (0.06) | 19.83 | ||||
| RP magnitude | 18.79 (0.02) | 18.77 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.004 | |||||
* 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.