SDO HMI 2011-02-20 11:58:57 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 |
| 16.83 | 126.25 | 64.62 | 588.92 | -18.73 | 35.59 | 85.17 | 251.85 | 0.9925 | -310.5 | -7.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-20 11:58:57 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 |
| 0.00 | 3.52 | 0.00 | 23.75 | -17.12 | 37.85 | 87.43 | 253.27 | 0.9973 | 180.0 | 74.3 | |
| 4.98 | 40.97 | 29.55 | 314.00 | -18.56 | 37.67 | 87.25 | 251.86 | 0.9968 | -591.7 | -178.0 | |
| 4.04 | 27.74 | 15.33 | 106.43 | -18.10 | 34.64 | 84.22 | 252.58 | 0.9917 | -176.8 | 280.7 | |
| 0.00 | 1.37 | 0.00 | 5.31 | -19.69 | 35.05 | 84.63 | 250.95 | 0.9923 | 308.0 | 286.2 | |
| 1.46 | 24.14 | 3.96 | 68.16 | -19.11 | 31.73 | 81.31 | 251.77 | 0.9842 | -338.0 | 151.7 | |
| 0.00 | 1.89 | 0.00 | 5.50 | -19.80 | 32.55 | 82.14 | 251.02 | 0.9864 | 225.0 | 198.9 | |
| 1.72 | 15.55 | 4.74 | 41.65 | -20.26 | 31.91 | 81.49 | 250.60 | 0.9845 | 339.6 | 285.7 | |
| 1.80 | -7.00 | 4.76 | -7.00 | -20.25 | 31.46 | 81.04 | 250.64 | 0.9832 | -250.7 | 999999 | |
| 0.00 | 1.63 | 0.00 | 4.19 | -21.26 | 31.23 | 80.82 | 249.62 | 0.9823 | 38.0 | 131.8 | |
| 0.00 | 1.03 | 0.00 | 2.25 | -20.44 | 29.09 | 78.67 | 250.57 | 0.9753 | -154.0 | -84.8 | |
| 2.83 | 4.55 | 6.28 | 10.10 | -21.49 | 29.32 | 78.91 | 249.48 | 0.9760 | -170.8 | -51.3 | |
| 0.00 | 2.66 | 0.00 | 5.18 | -20.53 | 27.26 | 76.84 | 250.55 | 0.9682 | -388.0 | -349.2 | |
| 0.00 | 1.20 | 0.00 | 2.40 | -20.83 | 27.62 | 77.21 | 250.22 | 0.9697 | -255.0 | -230.6 | |
| 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. | |