US 857
All names: Gaia DR3 824799781447798784, US 857, WD 0939+474, SDSS J094219.54+471404.0, SDSS J094219.56+471404.0, GALEX J094219.5+471403, Gaia EDR3 824799781447798784, Gaia DR2 824799781447798784, SDSS J094219.56+471403.7, SDSS J094219.55+471404.0
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 42 19.55 (0.2) | 09 42 19.55 | 09 42 19.55 (0.2) | 09 42 19.55 | 09 42 19.56 (0.2) | 09 42 19.56 | 09 42 19.15 | 09 42 19.56 | ||||||
| Declination | 47 14 03.67 (0.1) | 47 14 04.02 | 47 14 03.68 (0.2) | 47 14 03.67 | 47 14 04.03 (0.1) | 47 14 04.01 | 47 13 59.52 | 47 14 04.02 | ||||||
| Spectral type | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 14711.0 | 16510.0 (500) | 17373.0 (1184) | 16061.0 (276) | 15970.0 (283) | ||||||||
| log(g) | [cgs] | 7.80 | 7.94 (0.09) | 8.15 (0.09) | 7.85 (0.07) | 7.78 (0.07) | ||||||||
| Mass | [M☉] | 0.506 | 0.58 (0.05) | 0.705 (0.07) | 0.508 (0.03) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.1540 | 0.1445 | |||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(C/H) | ||||||||||||||
| log(N/H) | ||||||||||||||
| log(O/H) | ||||||||||||||
| log(Na/H) | ||||||||||||||
| log(Mg/H) | ||||||||||||||
| log(Al/H) | ||||||||||||||
| log(Si/H) | ||||||||||||||
| log(P/H) | ||||||||||||||
| log(S/H) | ||||||||||||||
| log(Sc/H) | ||||||||||||||
| log(Ti/H) | ||||||||||||||
| log(Cr/H) | ||||||||||||||
| log(Mn/H) | ||||||||||||||
| log(Fe/H) | ||||||||||||||
| log(Ni/H) | ||||||||||||||
| Parallax | [mas] | 3.18 (0.2) | 2.87 (0.3) | 3.18 | 3.18 (0.2) | |||||||||
| Distance | [pc] | 314.32 (20) | 348.85 (35) | 314.32 | 314.32 (20) | |||||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.304847033 (0.2) | -1.648118049 (0.4) | -1.305 (0.2) | 2.0 | |||||||||
| Proper motion (declination) | [mas/yr] | -22.48463084 (0.2) | -21.86338887 (0.5) | -22.485 (0.2) | -24.8 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.70 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 18.80 (0.02) | 18.80 (0.02) | 18.85 (0.03) | 18.85 | 18.84 (0.02) | |||||||||
| g magnitude | 18.58 (0.008) | 18.58 (0.008) | 18.58 (0.02) | 18.58 | 18.58 (0.02) | |||||||||
| r magnitude | 18.93 (0.01) | 18.93 (0.01) | 18.89 (0.03) | 18.89 | 18.89 (0.03) | |||||||||
| i magnitude | 19.16 (0.02) | 19.16 (0.02) | 19.14 (0.02) | 19.14 | 19.13 (0.02) | |||||||||
| z magnitude | 19.42 (0.06) | 19.42 (0.06) | 19.41 (0.07) | 19.42 | 19.42 (0.07) | |||||||||
| G magnitude | 18.77 (0.02) | 18.80 | 18.77 | 18.77 (0.004) | ||||||||||
| BP magnitude | 18.75 (0.02) | 18.74 | ||||||||||||
| RP magnitude | 18.95 (0.04) | 18.94 | ||||||||||||
| Pan g magnitude | 18.66 (0.004) | |||||||||||||
| Pan r magnitude | 18.90 (0.005) | |||||||||||||
| Pan i magnitude | 19.21 (0.01) | |||||||||||||
| Pan z magnitude | 19.45 (0.02) | |||||||||||||
| Pan y magnitude | 19.58 (0.06) | |||||||||||||
| E(B-V) | 0.017 | |||||||||||||
* Constant surface field
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