SDO HMI 2014-02-21 19:00:26 UT
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing)
(It is recommended to set high resolution on your display!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 18.91 | 93.49 | 49.13 | 280.39 | -1.54 | 147.11 | -80.40 | 90.37 | 0.9853 | -101.6 | 62.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-02-21 19:00:26 UT
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing) (It is recommended to set high resolution on your display!) |
| spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 8.76 | 50.09 | 19.46 | 113.02 | -2.39 | 150.25 | -77.26 | 90.85 | 0.9757 | -447.2 | -205.9 | |
| 4.30 | -1.00 | 10.13 | -1.00 | -2.56 | 149.36 | -78.15 | 91.12 | 0.9789 | -154.8 | 999999 | |
| 0.69 | 2.15 | 1.75 | 5.48 | -1.89 | 148.57 | -78.94 | 90.54 | 0.9818 | 103.8 | 109.4 | |
| 2.32 | 8.08 | 6.04 | 21.19 | -2.57 | 148.26 | -79.25 | 91.26 | 0.9826 | -25.1 | 6.8 | |
| 0.00 | 2.58 | 0.00 | 6.85 | -2.13 | 148.03 | -79.48 | 90.84 | 0.9835 | 248.0 | 198.2 | |
| 2.84 | 29.64 | 11.75 | 129.93 | -0.55 | 144.44 | -83.07 | 89.69 | 0.9932 | 382.9 | 241.4 | |
| 0.00 | 0.95 | 0.00 | 3.92 | -1.28 | 144.34 | -83.17 | 90.44 | 0.9932 | 297.0 | 301.8 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
|
that the umbra consists of fragmented regions which cannot be separated without losing umbral area. In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2. |
||
| Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
|
that several umbras have a common penumbra, e.g. -7 means that the given umbra shares a penumbra with umbra No.7, and the WS value is indicated at No.7. |
||
| Corr. U | - Corrected umbra area in millionths of solar hemisphere, for negative values see above | |
| Corr. WS | - Corrected whole spot area in millionths of solar hemisphere, for negative values see above | |
| B | - Heliographic latitude B; positive: North, negative: South | |
| L | - Heliographic longitude L | |
| LCM | - Longitudinal distance from the Sun's central meridian | |
| Pos. angle | - Position angle | |
| r | - Distance from the centre of Sun's disc in terms of Sun's radius | |
| MU | - Mean magnetic field within the umbra contour averaged the pixel values with sign. | |
| MP | - Mean magnetic field within the penumbra contour averaged the pixel values with sign. | |