All names: SDSS J224548.30+220920.5, WISEA J224548.31+220921.4, WD 2243+218, SDSS J224548.31+220921.4, 2MASS J22454831+2209216, Gaia DR2 2836487528600343296, SDSS J224548.31+220920.5, WISE J224548.31+220921.5, TIC 434196096, Gaia EDR3 2836487528600343296
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 22 45 48.31 (0.2) | 22 45 48.32 | 22 45 48.31 (0.4) | 22 45 48.32 | 22 45 48.05 | ||
| Declination | 22 09 21.44 (0.2) | 22 09 21.43 | 22 09 21.45 (0.5) | 22 09 21.43 | 22 09 18.36 | ||
| Spectral type | DA+M | DA6.1 M | |||||
| Effective temperature | [K] | ||||||
| log(g) | [cgs] | ||||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 2.69 (0.2) | 2.05 (0.3) | ||||
| Distance | [pc] | 371.91 (28) | 488.82 (66) | ||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -1.342715664 (0.3) | -5.455315863 (0.9) | ||||
| Proper motion (declination) | [mas/yr] | -19.57673188 (0.3) | -22.98874623 (0.5) | ||||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 14.98 (0.04) | ||||||
| H magnitude | 14.53 (0.05) | ||||||
| K magnitude | 14.17 (0.07) | ||||||
| u magnitude | 20.38 (0.05) | 20.39 (0.05) | 20.76 | ||||
| g magnitude | 19.00 (0.009) | 19.00 (0.009) | 19.43 | ||||
| r magnitude | 18.32 (0.008) | 18.32 (0.008) | 18.89 | ||||
| i magnitude | 17.27 (0.006) | 17.27 (0.006) | 17.89 | ||||
| z magnitude | 16.46 (0.009) | 16.45 (0.009) | 17.18 | ||||
| G magnitude | 18.15 (0.03) | 18.10 | |||||
| BP magnitude | 18.90 (0.03) | 18.82 | |||||
| RP magnitude | 16.73 (0.006) | 16.74 | |||||
| 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.