SDSS J084217.80+225459.0
All names: Gaia DR2 665390558428743296, Gaia DR3 665390558428743296, SDSS J084217.80+225459.0, SDSS J084217.79+225458.8, Gaia EDR3 665390558428743296, SDSS J084217.80+225458.9, GALEX J084217.7+225459
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 42 17.78 (0.6) | 08 42 17.80 | 08 42 17.79 (0.9) | 08 42 17.81 (0.6) | 08 42 17.80 | |||||
| Declination | 22 54 58.93 (0.3) | 22 54 58.92 | 22 54 58.93 (0.5) | 22 54 58.91 (0.3) | 22 54 59.00 | |||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 9673.0 | 10056.0 (295) | |||||||
| log(g) | [cgs] | 8.39 | 7.87 (0.3) | |||||||
| Mass | [M☉] | 0.849 | 0.533 (0.2) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 1.2420 | ||||||||
| 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] | 2.56 (0.7) | 3.38 (1) | 2.56 (0.7) | ||||||
| Distance | [pc] | 390.95 (113) | 295.85 (86) | 390.95 (113) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -21.97161206 (0.8) | -23.7148783 (2) | -21.972 (0.8) | ||||||
| Proper motion (declination) | [mas/yr] | 1.164351026 (0.6) | 2.384104189 (1) | 1.164 (0.6) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 20.77 (0.07) | 20.77 (0.07) | 20.80 (0.08) | |||||||
| g magnitude | 20.37 (0.02) | 20.37 (0.02) | 20.37 (0.02) | |||||||
| r magnitude | 20.39 (0.03) | 20.39 (0.03) | 20.38 (0.03) | |||||||
| i magnitude | 20.49 (0.05) | 20.49 (0.05) | 20.48 (0.05) | |||||||
| z magnitude | 20.64 (0.2) | 20.64 (0.2) | 20.59 (0.1) | |||||||
| G magnitude | 20.37 (0.09) | 20.42 | 20.37 (0.006) | |||||||
| BP magnitude | 20.38 (0.09) | 20.07 | ||||||||
| RP magnitude | 20.06 (0.09) | 20.01 | ||||||||
| Pan g magnitude | 20.40 (0.02) | |||||||||
| Pan r magnitude | 20.40 (0.02) | |||||||||
| Pan i magnitude | 20.54 (0.02) | |||||||||
| Pan z magnitude | 20.59 (0.06) | |||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.024 | |||||||||
* Constant surface field
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