All names: SDSS J220048.67+123612.4, SDSSJ220048.67+123612.4, Gaia DR3 2728561666241131264, SDSS J220048.67+123612.35, SDSS J220048.68+123612.3, Gaia EDR3 2728561666241131264, Gaia DR2 2728561666241131264, GALEX J220048.6+123612, SDSS J220048.67+123612.3
| 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 | 22 00 48.68 (0.2) | 22 00 48.68 | 22 00 48.68 | 22 00 48.67 | 22 00 48.68 (0.3) | 22 00 48.68 (0.2) | 22 00 48.68 | ||||
| Declination | 12 36 12.27 (0.2) | 12 36 12.36 | 12 36 12.36 | 12 36 12.40 | 12 36 12.27 (0.3) | 12 36 12.41 (0.2) | 12 36 12.42 | ||||
| Spectral type | sdO | DAO/dO | sdO | SDO | |||||||
| Effective temperature | [K] | 64200.0 (2600) | 77778.0 (3481) | 47909.0 (1913) | |||||||
| log(g) | [cgs] | 5.63 (0.1) | 6.53 (0.1) | 5.66 (0.1) | |||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.21 (0.2) | 0.28 (0.4) | 0.28 (0.4) | 0.21 (0.2) | ||||||
| Distance | [pc] | 4793.71 (4591) | 3519.89 (4423) | 3519.35 (4421) | 4793.86 (4592) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.596295958 (0.2) | -3.701 (0.4) | -3.70099405 (0.4) | -3.596 (0.2) | -2.5 | |||||
| Proper motion (declination) | [mas/yr] | -8.701259116 (0.2) | -8.197 (0.5) | -8.197417614 (0.5) | -8.701 (0.2) | -7.9 | |||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 17.90 (0.01) | 17.90 (0.01) | 17.90 (0.01) | 17.89 (0.02) | 17.90 (0.01) | 17.93 (0.02) | |||||
| g magnitude | 18.26 (0.007) | 18.26 (0.007) | 18.26 (0.007) | 18.29 (0.01) | 18.26 (0.007) | 18.32 (0.01) | |||||
| r magnitude | 18.76 (0.009) | 18.76 (0.009) | 18.76 (0.009) | 18.75 (0.02) | 18.76 (0.009) | 18.79 (0.02) | |||||
| i magnitude | 19.10 (0.01) | 19.10 (0.01) | 19.10 (0.01) | 19.07 (0.02) | 19.10 (0.01) | 19.13 (0.02) | |||||
| z magnitude | 19.48 (0.06) | 19.48 (0.06) | 19.48 (0.06) | 19.49 (1) | 19.48 (0.06) | 19.40 (0.07) | |||||
| G magnitude | 18.51 (0.03) | 18.54 (0.003) | 18.54 | 18.51 (0.003) | |||||||
| BP magnitude | 18.38 (0.03) | 18.36 (0.02) | 18.36 | ||||||||
| RP magnitude | 18.86 (0.06) | 18.84 (0.03) | 18.84 | ||||||||
| Pan g magnitude | 18.34 (0.005) | 18.34 (0.005) | |||||||||
| Pan r magnitude | 18.78 (0.01) | 18.78 (0.01) | |||||||||
| Pan i magnitude | 19.10 (0.008) | 19.10 (0.008) | |||||||||
| Pan z magnitude | 19.41 (0.009) | 19.41 (0.009) | |||||||||
| Pan y magnitude | 19.60 (0.03) | 19.60 (0.03) | |||||||||
| E(B-V) | 0.049 | ||||||||||
* 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.