All names: GALEX J122249.4+160446, SDSS J122249.44+160446.8, SDSS J122249.42+160446.7, Gaia DR2 3945590810485041152, SDSS J122249.45+160446.8, SDSS J122249.43+160446.7, Gaia EDR3 3945590810485041152, Gaia DR3 3945590810485041152
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 22 49.43 (0.2) | 12 22 49.44 | 12 22 49.43 (0.3) | 12 22 49.46 (0.2) | 12 22 49.45 | ||||
| Declination | 16 04 46.69 (0.2) | 16 04 46.82 | 16 04 46.70 (0.2) | 16 04 46.75 (0.2) | 16 04 46.82 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 24092.0 (610) | |||||||
| log(g) | [cgs] | 7.81 (0.1) | |||||||
| Mass | [M☉] | 0.542 (0.04) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.84 (0.2) | 1.87 (0.3) | 1.84 (0.2) | |||||
| Distance | [pc] | 544.51 (74) | 534.13 (95) | 544.51 (74) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -25.75373986 (0.3) | -26.47788922 (0.7) | -25.754 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | -3.549581937 (0.2) | -2.985288063 (0.5) | -3.55 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.85 (0.02) | 18.85 (0.02) | 18.85 (0.02) | ||||||
| g magnitude | 18.88 (0.008) | 18.88 (0.008) | 18.90 (0.02) | ||||||
| r magnitude | 19.30 (0.01) | 19.30 (0.01) | 19.30 (0.02) | ||||||
| i magnitude | 19.63 (0.02) | 19.63 (0.02) | 19.62 (0.02) | ||||||
| z magnitude | 19.86 (0.07) | 19.86 (0.07) | 19.84 (0.07) | ||||||
| G magnitude | 19.11 (0.02) | 19.15 | 19.11 (0.004) | ||||||
| BP magnitude | 19.04 (0.02) | 18.98 | |||||||
| RP magnitude | 19.32 (0.05) | 19.21 | |||||||
| Pan g magnitude | 18.99 (0.009) | ||||||||
| Pan r magnitude | 19.28 (0.01) | ||||||||
| Pan i magnitude | 19.63 (0.02) | ||||||||
| Pan z magnitude | 19.88 (0.03) | ||||||||
| Pan y magnitude | 19.88 (0.08) | ||||||||
| E(B-V) | 0.022 | ||||||||
* 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.