All names: SDSS J080227.17+423254.2, Gaia EDR3 922756612396335616, Gaia DR3 922756612396335616, Gaia DR2 922756612396335616, SDSS J080227.17+423254.25
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 02 27.18 (0.4) | 08 02 27.17 | 08 02 27.18 (0.5) | 08 02 27.18 (0.4) | |||
| Declination | 42 32 54.22 (0.4) | 42 32 54.24 | 42 32 54.22 (0.4) | 42 32 54.27 (0.4) | |||
| Spectral type | sdA | sdA | |||||
| Effective temperature | [K] | 6914.0 (70) | |||||
| log(g) | [cgs] | 5.60 (0.2) | |||||
| Mass | [M☉] | 0.14507 (0.0007) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | -0.50 (0.5) | -0.78 (0.6) | ||||
| Distance | [pc] | ||||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 0.614284884 (0.5) | 0.305102775 (0.9) | 0.614 (0.5) | |||
| Proper motion (declination) | [mas/yr] | -3.142945706 (0.4) | -3.62684587 (0.8) | -3.143 (0.4) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 21.41 (0.1) | 21.39 (0.1) | 21.39 (0.1) | ||||
| g magnitude | 20.36 (0.02) | 20.35 (0.02) | 20.35 (0.02) | ||||
| r magnitude | 20.20 (0.03) | 20.18 (0.03) | 20.18 (0.03) | ||||
| i magnitude | 20.13 (0.03) | 20.11 (0.04) | 20.11 (0.04) | ||||
| z magnitude | 20.33 (0.1) | 20.32 (0.2) | 20.32 (0.2) | ||||
| G magnitude | 20.04 (0.09) | 20.07 | 20.04 (0.007) | ||||
| BP magnitude | 20.22 (0.09) | 20.17 | |||||
| RP magnitude | 19.46 (0.08) | 19.41 | |||||
| Pan g magnitude | 20.27 (0.02) | ||||||
| Pan r magnitude | 20.05 (0.02) | ||||||
| Pan i magnitude | 19.92 (0.01) | ||||||
| Pan z magnitude | 19.91 (0.03) | ||||||
| Pan y magnitude | 19.61 (0.1) | ||||||
| E(B-V) | |||||||
* 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.