SDSS J081716.05+181526.7
All names: SDSS J081716.04+181526.5, Gaia EDR3 657189644794596608, Gaia DR3 657189644794596608, SDSS J081716.05+181526.7, Gaia DR2 657189644794596608, GALEX J081716.0+181527, SDSS J081716.04+181526.6
| 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 17 16.05 (0.5) | 08 17 16.05 | 08 17 16.05 (0.8) | 08 17 16.05 (0.5) | 08 17 16.05 | |||||
| Declination | 18 15 26.64 (0.3) | 18 15 26.60 | 18 15 26.64 (0.4) | 18 15 26.66 (0.3) | 18 15 26.68 | |||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 13764.0 | 18523.0 (728) | |||||||
| log(g) | [cgs] | 8.36 | 7.85 (0.2) | |||||||
| Mass | [M☉] | 0.832 | 0.546 (0.09) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.4415 | ||||||||
| 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] | 2.45 (0.7) | 2.37 (0.9) | 2.45 (0.7) | ||||||
| Distance | [pc] | 408.30 (110) | 421.56 (162) | 408.30 (110) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 0.993276971 (0.7) | 2.396515106 (1) | 0.993 (0.7) | ||||||
| Proper motion (declination) | [mas/yr] | -1.648710325 (0.4) | -1.682379421 (0.8) | -1.649 (0.4) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 20.13 (0.05) | 20.13 (0.05) | 20.12 (0.05) | |||||||
| g magnitude | 19.96 (0.02) | 19.96 (0.02) | 20.03 (0.02) | |||||||
| r magnitude | 20.29 (0.03) | 20.29 (0.03) | 20.28 (0.03) | |||||||
| i magnitude | 20.55 (0.06) | 20.55 (0.06) | 20.57 (0.04) | |||||||
| z magnitude | 21.15 (0.3) | 21.15 (0.3) | 20.54 (0.1) | |||||||
| G magnitude | 20.14 (0.07) | 20.22 | 20.14 (0.006) | |||||||
| BP magnitude | 20.09 (0.07) | 19.98 | ||||||||
| RP magnitude | 20.22 (0.09) | 20.06 | ||||||||
| Pan g magnitude | 20.03 (0.01) | |||||||||
| Pan r magnitude | 20.28 (0.002) | |||||||||
| Pan i magnitude | 20.50 (0.02) | |||||||||
| Pan z magnitude | 20.74 (0.06) | |||||||||
| Pan y magnitude | 20.71 (0.2) | |||||||||
| E(B-V) | 0.025 | |||||||||
* Constant surface field
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