SDSS J194849.46+771640.7
All names: WISE J194849.51+771640.3, SDSS J194849.44+771640.8, WIRED J194849.45+771640.8, Gaia DR2 2289780587442111104, SDSS J194849.45+771640.8, Gaia DR3 2289780587442111104, SDSS J194849.46+771640.7, [HHD2009] SDSS J1948+7716, SDSS J194849.45+771640.9, Gaia EDR3 2289780587442111104, GALEX J194849.9+771638, WD 1950+771
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 48 49.39 (0.3) | 19 48 49.46 | 19 48 49.39 (0.3) | 19 48 49.39 | 19 48 49.47 (0.3) | 19 48 48.55 | 19 48 49.45 | ||||||
| Declination | 77 16 40.69 (0.3) | 77 16 40.79 | 77 16 40.69 (0.4) | 77 16 40.69 | 77 16 40.78 (0.3) | 77 16 35.76 | 77 16 40.85 | ||||||
| Spectral type | D+M | D+M | DA | DA+dM | DA d | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 6372.0 | 6160.0 | 8194.0 (358) | 11290.0 (159) | ||||||||
| log(g) | [cgs] | 6.88 | 6.57 | 7.26 (0.1) | 8.37 (0.1) | ||||||||
| Mass | [M☉] | 0.165 | 0.085 | 0.268 (0.06) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | ||||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 3.31 (0.3) | 4.10 (0.4) | 3.31 | 3.31 (0.3) | ||||||||
| Distance | [pc] | 302.47 (27) | 243.94 (24) | 302.47 | 302.47 (27) | ||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -17.35449 (0.4) | -18.61424318 (0.7) | -17.354 (0.4) | |||||||||
| Proper motion (declination) | [mas/yr] | -5.922452307 (0.3) | -5.858481708 (0.7) | -5.922 (0.3) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | |||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.75 (0.04) | 19.75 (0.04) | 20.12 | 19.76 (0.04) | |||||||||
| g magnitude | 19.33 (0.01) | 19.33 (0.01) | 19.65 | 19.31 (0.02) | |||||||||
| r magnitude | 19.57 (0.02) | 19.57 (0.02) | 19.90 | 19.53 (0.02) | |||||||||
| i magnitude | 19.41 (0.02) | 19.41 (0.02) | 19.73 | 19.40 (0.02) | |||||||||
| z magnitude | 18.92 (0.04) | 18.92 (0.04) | 19.31 | 18.94 (0.04) | |||||||||
| G magnitude | 19.47 (0.04) | 19.46 | 19.47 | 19.47 (0.005) | |||||||||
| BP magnitude | 19.50 (0.04) | 19.42 | |||||||||||
| RP magnitude | 19.03 (0.05) | 18.89 | |||||||||||
| Pan g magnitude | 19.36 (0.01) | ||||||||||||
| Pan r magnitude | 19.53 (0.02) | ||||||||||||
| Pan i magnitude | 19.42 (0.01) | ||||||||||||
| Pan z magnitude | 19.09 (0.01) | ||||||||||||
| Pan y magnitude | 18.84 (0.03) | ||||||||||||
| E(B-V) | 0.053 | ||||||||||||
* Constant surface field
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