All names: TIC 286379768, Gaia EDR3 4599364895423707520, SDSS J172221.06+292431.43, Gaia DR3 4599364895423707520, SDSSJ172221.05+292431.4, SDSS J172221.05+292431.4, 2MASS J17222105+2924311, Gaia DR2 4599364895423707520, GALEX J172221.0+292431, SDSS J172221.06+292431.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 22 21.05 (0.03) | 17 22 21.06 | 17 22 21.05 | 17 22 21.06 (0.05) | 17 22 21.06 (0.03) | ||||
| Declination | 29 24 31.32 (0.04) | 29 24 31.46 | 29 24 31.40 | 29 24 31.32 (0.06) | 29 24 31.46 (0.04) | ||||
| Spectral type | sdOB | DAO | sdB0He9+G/K | ||||||
| Effective temperature | [K] | 34426.0 (329) | |||||||
| log(g) | [cgs] | 5.35 (0.08) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.28 (0.04) | 0.25 (0.06) | 0.25 (0.06) | 0.28 (0.04) | ||||
| Distance | [pc] | 3608.35 (572) | 3980.89 (987) | 3981.31 (988) | 3608.81 (572) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -3.344562775 (0.04) | -3.493 (0.1) | -3.492579223 (0.1) | -3.345 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -8.68625955 (0.05) | -9.078 (0.1) | -9.078048667 (0.1) | -8.686 (0.05) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.60 (0.1) | 16.60 (0.1) | |||||||
| H magnitude | 16.17 | ||||||||
| K magnitude | 15.94 | ||||||||
| u magnitude | 16.40 (0.006) | 16.40 (0.006) | 16.43 (0.02) | 16.40 (0.006) | |||||
| g magnitude | 16.62 (0.004) | 16.62 (0.004) | 16.65 (0.01) | 16.62 (0.004) | |||||
| r magnitude | 16.99 (0.005) | 16.99 (0.005) | 17.01 (0.01) | 16.98 (0.005) | |||||
| i magnitude | 17.17 (0.006) | 17.17 (0.006) | 17.18 (0.01) | 17.17 (0.006) | |||||
| z magnitude | 17.31 (0.01) | 17.31 (0.01) | 17.32 (0.02) | 17.30 (0.01) | |||||
| G magnitude | 16.80 (0.004) | 16.83 (0.001) | 16.83 | 16.80 (0.003) | |||||
| BP magnitude | 16.73 (0.004) | 16.69 (0.006) | 16.69 | ||||||
| RP magnitude | 16.89 (0.006) | 16.90 (0.006) | 16.90 | ||||||
| Pan g magnitude | 16.70 (0.004) | 16.70 (0.004) | |||||||
| Pan r magnitude | 17.01 (0.004) | 17.01 (0.004) | |||||||
| Pan i magnitude | 17.23 (0.006) | 17.23 (0.006) | |||||||
| Pan z magnitude | 17.36 (0.006) | 17.36 (0.006) | |||||||
| Pan y magnitude | 17.47 (0.007) | 17.47 (0.007) | |||||||
| E(B-V) | 0.029 | ||||||||
* 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.