SDSS J081812.91+173029.7
All names: GALEX J081812.8+173029, Gaia EDR3 656348316538172160, Gaia DR2 656348312240328704, Gaia DR3 656348316538172160, SDSS J081812.91+173029.7, SDSS J081812.90+173029.6
| 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 18 12.90 (0.3) | 08 18 12.91 | 08 18 12.90 (0.5) | 08 18 12.91 (0.3) | 08 18 12.91 | |||||
| Declination | 17 30 29.56 (0.2) | 17 30 29.63 | 17 30 29.57 (0.3) | 17 30 29.74 (0.2) | 17 30 29.68 | |||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 14638.0 | 20844.0 (509) | |||||||
| log(g) | [cgs] | 6.92 | 7.98 (0.1) | |||||||
| Mass | [M☉] | 0.231 | 0.614 (0.06) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| 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] | 1.21 (0.4) | 1.07 (0.6) | 1.21 (0.4) | ||||||
| Distance | [pc] | 825.19 (299) | 931.88 (509) | 825.22 (299) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.536603138 (0.4) | -7.940282082 (1) | -8.537 (0.4) | ||||||
| Proper motion (declination) | [mas/yr] | -11.01014148 (0.3) | -11.20411459 (0.7) | -11.01 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.48 (0.03) | 19.48 (0.03) | 19.50 (0.03) | |||||||
| g magnitude | 19.40 (0.01) | 19.40 (0.01) | 19.41 (0.02) | |||||||
| r magnitude | 19.73 (0.02) | 19.73 (0.02) | 19.73 (0.02) | |||||||
| i magnitude | 19.96 (0.03) | 19.96 (0.03) | 19.96 (0.03) | |||||||
| z magnitude | 20.46 (0.1) | 20.46 (0.1) | 20.31 (0.1) | |||||||
| G magnitude | 19.58 (0.05) | 19.63 | 19.58 (0.005) | |||||||
| BP magnitude | 19.55 (0.05) | 19.32 | ||||||||
| RP magnitude | 19.70 (0.09) | 19.50 | ||||||||
| Pan g magnitude | 19.42 (0.01) | |||||||||
| Pan r magnitude | 19.73 (0.02) | |||||||||
| Pan i magnitude | 20.03 (0.02) | |||||||||
| Pan z magnitude | 20.22 (0.02) | |||||||||
| Pan y magnitude | 20.51 (0.1) | |||||||||
| E(B-V) | 0.033 | |||||||||
* Constant surface field
Special notes:
Spectra
Controls
Normalize at:
Normalize by mean flux
Range:
x:
to
y:
to
Spectra available:
Spectra without link are available upon request
Absorption lines
Photometric filters
BVRI
ugriz
Photometric fit
