All names: Gaia EDR3 908526118730334592, GALEX J082226.2+394119, USNO-B1.0 1296-00200994, SDSS J082226.26+394119.1, LAMOST J082226.26+394119.0, KUV08191+3951, SDSS J082226.26+394119.07, SDSS J082226.26+394119.0, Gaia DR2 908526118730334592, Gaia DR3 908526118730334592, KUV 08191+3951
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 22 26.27 (0.08) | 08 22 26.26 | 08 22 26.26 | 08 22 26.27 (0.1) | 08 22 26.27 (0.08) | ||||
| Declination | 39 41 19.03 (0.06) | 39 41 19.15 | 39 41 19.58 | 39 41 19.04 (0.07) | 39 41 19.13 (0.06) | ||||
| Spectral type | sdB | sdB | sdO | ||||||
| Effective temperature | [K] | 31660.0 (980) | 32428.0 (130) | ||||||
| log(g) | [cgs] | 5.84 (0.2) | 5.56 (0.03) | ||||||
| Mass | [M☉] | 0.195 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.34 (0.09) | 0.41 (0.1) | 0.41 (0.1) | 0.34 (0.09) | ||||
| Distance | [pc] | 2901.96 (785) | 2437.24 (855) | 2437.28 (855) | 2901.92 (785) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -0.074455869 (0.09) | -0.145 (0.2) | -0.144595806 (0.2) | -0.074 (0.09) | ||||
| Proper motion (declination) | [mas/yr] | -5.876219465 (0.07) | -6.033 (0.1) | -6.032669066 (0.1) | -5.876 (0.07) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.70 | ||||||||
| V magnitude | 17.13 | ||||||||
| R magnitude | 17.10 | ||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 16.48 (0.006) | 16.48 (0.006) | 16.48 (0.01) | 16.48 (0.006) | |||||
| g magnitude | 16.66 (0.004) | 16.66 (0.004) | 16.68 (0.01) | 16.66 (0.004) | |||||
| r magnitude | 17.11 (0.006) | 17.11 (0.006) | 17.11 (0.01) | 17.11 (0.006) | |||||
| i magnitude | 17.44 (0.007) | 17.44 (0.007) | 17.45 (0.02) | 17.44 (0.007) | |||||
| z magnitude | 17.74 (0.02) | 17.73 (0.01) | 17.72 (0.02) | 17.73 (0.01) | |||||
| G magnitude | 16.92 (0.008) | 16.95 (0.002) | 16.95 | 16.92 (0.003) | |||||
| BP magnitude | 16.80 (0.008) | 16.72 (0.01) | 16.72 | ||||||
| RP magnitude | 17.17 (0.01) | 17.15 (0.01) | 17.15 | ||||||
| Pan g magnitude | 16.76 (0.004) | 16.76 (0.004) | |||||||
| Pan r magnitude | 17.15 (0.004) | 17.14 (0.004) | |||||||
| Pan i magnitude | 17.49 (0.004) | 17.49 (0.004) | |||||||
| Pan z magnitude | 17.75 (0.006) | 17.75 (0.006) | |||||||
| Pan y magnitude | 17.89 (0.04) | 17.89 (0.04) | |||||||
| E(B-V) | 0.035 | ||||||||
* 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.