All names: SDSS J022422.21+000313.57, Gaia DR3 2500824388329728256, Gaia DR2 2500824388329728256, Gaia EDR3 2500824388329728256, GALEX J022422.2+000313, SDSS J022422.21+000313.4, SDSS J022422.21+000313.5, SDSSJ022422.21+000313.5, SDSS J022422.22+000313.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 24 22.22 (0.2) | 02 24 22.22 | 02 24 22.22 | 02 24 22.21 | 02 24 22.22 (0.3) | 02 24 22.22 (0.2) | 02 24 22.22 | ||||
| Declination | 00 03 13.38 (0.2) | 00 03 13.42 | 00 03 13.42 | 00 03 13.50 | 00 03 13.38 (0.3) | 00 03 13.49 (0.2) | 00 03 13.42 | ||||
| Spectral type | He-sdOB | He-sdB | sdO | SDO | |||||||
| Effective temperature | [K] | 48415.0 (1395) | 36628.0 (719) | ||||||||
| log(g) | [cgs] | 6.26 (0.1) | 5.13 (0.1) | ||||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.16 (0.3) | -0.09 (0.3) | -0.09 (0.3) | 0.16 (0.3) | ||||||
| Distance | [pc] | 6273.03 (10580) | 6273.53 (10583) | ||||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 5.566835857 (0.3) | 5.196 (0.7) | 5.196126343 (0.7) | 5.567 (0.3) | 6.6 | |||||
| Proper motion (declination) | [mas/yr] | -7.361349664 (0.2) | -7.003 (0.6) | -7.002920737 (0.6) | -7.361 (0.2) | -11.7 | |||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 19.40 (0.2) | ||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.32 (0.01) | 18.32 (0.01) | 18.32 (0.01) | 18.31 (0.02) | 18.32 (0.01) | 18.36 (0.02) | |||||
| g magnitude | 18.71 (0.008) | 18.71 (0.008) | 18.71 (0.008) | 18.73 (0.02) | 18.71 (0.008) | 18.73 (0.03) | |||||
| r magnitude | 19.18 (0.01) | 19.18 (0.01) | 19.18 (0.01) | 19.19 (0.02) | 19.18 (0.01) | 19.21 (0.02) | |||||
| i magnitude | 19.53 (0.02) | 19.53 (0.02) | 19.53 (0.02) | 19.54 (0.03) | 19.53 (0.02) | 19.59 (0.03) | |||||
| z magnitude | 19.92 (0.08) | 19.92 (0.08) | 19.92 (0.08) | 19.92 (0.08) | 19.92 (0.08) | 19.83 (0.09) | |||||
| G magnitude | 18.96 (0.03) | 19.01 (0.006) | 19.01 | 18.96 (0.004) | |||||||
| BP magnitude | 18.82 (0.03) | 18.80 (0.04) | 18.80 | ||||||||
| RP magnitude | 19.19 (0.1) | 19.37 (0.06) | 19.37 | ||||||||
| Pan g magnitude | 18.77 (0.008) | 18.77 (0.008) | |||||||||
| Pan r magnitude | 19.20 (0.007) | 19.20 (0.007) | |||||||||
| Pan i magnitude | 19.57 (0.01) | 19.57 (0.01) | |||||||||
| Pan z magnitude | 19.87 (0.03) | 19.87 (0.03) | |||||||||
| Pan y magnitude | 19.98 (0.1) | 19.98 (0.1) | |||||||||
| 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.