All names: SBC9 3406, SDSS J220848.99+122144.7, SDSS J220848.99+122144.6, WD 2206+121, Gaia DR3 2728653883483232256, 2MASS J22084899+1221446, Gaia EDR3 2728653883483232256, Gaia DR2 2728653883483232256, WIRED J220848.99+122144.7, TIC 456780877, [HHD2009] SDSS J2208+1221, SDSS J220849.00+122144.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 08 49.00 (0.07) | 22 08 48.99 | 22 08 49.00 (0.1) | 22 08 48.99 | 22 08 48.99 (0.07) | 22 08 48.99 | 22 08 48.94 | 22 08 49.00 | |||
| Declination | 12 21 44.66 (0.07) | 12 21 44.69 | 12 21 44.67 (0.1) | 12 21 44.71 | 12 21 44.68 (0.07) | 12 21 44.63 | 12 21 43.92 | 12 21 44.73 | |||
| Spectral type | DA+K | DA+dMe | DA+M | DA dM | DAEM | ||||||
| Effective temperature | [K] | 99575.0 (5434) | 10080.0 (2) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 9.02 (0.3) | 8.96 (0.06) | 10.00 (0.003) | |||||||
| Mass | [M☉] | 1.24 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.39 (0.08) | 1.20 (0.1) | 1.39 (0.08) | |||||||
| Distance | [pc] | 720.96 (42) | 834.12 (73) | 720.98 (42) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 7.788484983 (0.09) | 7.92712966 (0.2) | 7.788 (0.09) | 8.1 | ||||||
| Proper motion (declination) | [mas/yr] | -1.23885124 (0.09) | -1.244414843 (0.2) | -1.239 (0.09) | -2.3 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.34 (0.05) | ||||||||||
| H magnitude | 14.60 (0.07) | ||||||||||
| K magnitude | 14.33 (0.07) | ||||||||||
| u magnitude | 17.72 (0.01) | 17.76 | 17.75 (0.01) | 17.76 (0.02) | 17.76 | 17.76 (0.02) | |||||
| g magnitude | 17.67 (0.006) | 17.72 | 17.71 (0.006) | 17.72 (0.01) | 17.72 | 17.72 (0.01) | |||||
| r magnitude | 17.20 (0.006) | 17.24 | 17.24 (0.006) | 17.24 (0.02) | 17.24 | 17.24 (0.02) | |||||
| i magnitude | 16.77 (0.006) | 16.83 | 16.82 (0.006) | 16.83 (0.02) | 16.83 | 16.81 (0.02) | |||||
| z magnitude | 16.47 (0.009) | 16.51 | 16.50 (0.01) | 16.51 (0.02) | 16.51 | 16.49 (0.02) | |||||
| G magnitude | 17.01 (0.009) | 17.03 | 17.01 (0.003) | ||||||||
| BP magnitude | 17.45 (0.009) | 17.45 | |||||||||
| RP magnitude | 16.33 (0.007) | 16.32 | |||||||||
| Pan g magnitude | 17.65 (0.005) | ||||||||||
| Pan r magnitude | 17.16 (0.01) | ||||||||||
| Pan i magnitude | 16.75 (0.004) | ||||||||||
| Pan z magnitude | 16.53 (0.003) | ||||||||||
| Pan y magnitude | 16.40 (0.01) | ||||||||||
| 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.