All names: SDSS J224912.30+220910.2, SDSS J224912.31+220910.2, Gaia DR2 2836392901881427840, SDSS J224912.31+220910.27, Gaia DR3 2836392901881427840, Gaia EDR3 2836392901881427840, SDSS J224912.31+220910.4, GALEX J224912.3+220910
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 49 12.31 (0.2) | 22 49 12.31 | 22 49 12.31 (0.3) | 22 49 12.32 (0.2) | ||||
| Declination | 22 09 10.24 (0.3) | 22 09 10.46 | 22 09 10.25 (0.4) | 22 09 10.56 (0.3) | ||||
| Spectral type | DAH: | DAH | DA | |||||
| Effective temperature | [K] | 16374.0 (24) | ||||||
| log(g) | [cgs] | 8.05 (0.02) | ||||||
| Mass | [M☉] | 0.6409999999999999 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 2.65 (0.3) | 2.86 (0.4) | 2.65 (0.3) | ||||
| Distance | [pc] | 377.49 (37) | 349.18 (46) | 377.49 (37) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -5.321843051 (0.3) | -5.872572194 (0.6) | -5.322 (0.3) | ||||
| Proper motion (declination) | [mas/yr] | -19.63944735 (0.3) | -19.39019196 (0.5) | -19.639 (0.3) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.02 (0.03) | 19.04 (0.04) | 19.03 (0.03) | |||||
| g magnitude | 18.79 (0.009) | 18.79 (0.02) | 18.78 (0.009) | |||||
| r magnitude | 19.10 (0.01) | 19.09 (0.02) | 19.10 (0.01) | |||||
| i magnitude | 19.39 (0.02) | 19.38 (0.03) | 19.39 (0.02) | |||||
| z magnitude | 20.10 (0.2) | 20.09 (0.2) | 20.09 (0.2) | |||||
| G magnitude | 18.94 (0.03) | 18.98 | 18.94 (0.004) | |||||
| BP magnitude | 18.97 (0.03) | 18.94 | ||||||
| RP magnitude | 19.01 (0.05) | 18.98 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.048 | |||||||
* 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.