WD 1142+645
All names: Gaia DR3 864234934209098880, GALEX J114450.1+641705, SDSS J114450.14+641705.2, Gaia DR2 864234934209098880, SDSS J114450.12+641705.1, Gaia EDR3 864234934209098880, SDSS J114450.13+641705.2, WD 1142+645
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 44 49.84 (0.3) | 11 44 50.13 | 11 44 49.85 (0.3) | 11 44 50.15 (0.3) | 11 44 50.14 | 11 44 49.80 | 11 44 50.13 | ||||||
| Declination | 64 17 04.53 (0.3) | 64 17 05.17 | 64 17 04.55 (0.3) | 64 17 05.22 (0.3) | 64 17 05.23 | 64 17 02.76 | 64 17 05.21 | ||||||
| Spectral type | DH: | DH: | DQ | DH: | DH | DC: | DC | ||||||
| Effective temperature | [K] | 7341.0 | 7089.0 | 10120.0 (57) | 10123.0 (59) | ||||||||
| log(g) | [cgs] | 8.25 | 8.16 | 8.01 (0.6) | 9.18 (0.6) | ||||||||
| Mass | [M☉] | 0.752 | 0.673 | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 2.1370 | 2.0120 | ||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 5.34 (0.4) | 6.22 (0.4) | 5.34 (0.4) | |||||||||
| Distance | [pc] | 187.25 (13) | 160.75 (11) | 187.25 (13) | |||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -128.8474836 (0.3) | -129.4578825 (0.7) | -128.847 (0.3) | -122.1 | ||||||||
| Proper motion (declination) | [mas/yr] | -43.16595716 (0.4) | -42.93550998 (0.7) | -43.166 (0.4) | -42.9 | ||||||||
| Variability | |||||||||||||
| Magnetic | yes | ||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 20.02 (0.05) | 20.02 (0.04) | 19.98 (0.06) | 20.02 | 19.97 (0.06) | ||||||||
| g magnitude | 19.76 (0.01) | 19.76 (0.01) | 19.75 (0.03) | 19.75 | 19.75 (0.03) | ||||||||
| r magnitude | 19.69 (0.02) | 19.69 (0.02) | 19.70 (0.03) | 19.67 | 19.70 (0.03) | ||||||||
| i magnitude | 19.76 (0.03) | 19.76 (0.03) | 19.78 (0.03) | 19.79 | 19.77 (0.03) | ||||||||
| z magnitude | 19.88 (0.1) | 19.88 (0.1) | 19.91 (0.1) | 19.91 | 19.92 (0.1) | ||||||||
| G magnitude | 19.66 (0.04) | 19.71 | 19.66 (0.004) | ||||||||||
| BP magnitude | 19.81 (0.04) | 19.82 | |||||||||||
| RP magnitude | 19.49 (0.06) | 19.33 | |||||||||||
| Pan g magnitude | 19.78 (0.02) | ||||||||||||
| Pan r magnitude | 19.68 (0.01) | ||||||||||||
| Pan i magnitude | 19.77 (0.01) | ||||||||||||
| Pan z magnitude | 19.81 (0.03) | ||||||||||||
| Pan y magnitude | 19.66 (0.02) | ||||||||||||
| E(B-V) | 0.015 | ||||||||||||
* Constant surface field
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