group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
8.47 | 37.41 | 4.37 | 19.44 | 14.29 | 302.90 | -15.73 | 61.81 | 0.2990 | 83.5 | -337.3 |
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back to the solar disc SDO HMI 2010-08-12 17:59:10 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 |
5.59 | 6.67 | 2.87 | 3.43 | 14.12 | 305.17 | -13.46 | 59.04 | 0.2645 | -1014.9 | -735.1 | |
1.53 | 20.20 | 0.79 | 10.45 | 14.32 | 303.57 | -15.06 | 60.97 | 0.2892 | -888.2 | -885.6 | |
0.00 | 0.99 | 0.00 | 0.52 | 13.81 | 300.93 | -17.70 | 65.86 | 0.3249 | 810.0 | 655.6 | |
0.00 | 2.34 | 0.00 | 1.24 | 15.10 | 300.26 | -18.37 | 62.99 | 0.3430 | 955.0 | 827.1 | |
0.00 | 3.34 | 0.00 | 1.75 | 13.66 | 300.25 | -18.38 | 66.98 | 0.3343 | 1170.0 | 931.6 | |
1.35 | 2.25 | 0.71 | 1.19 | 15.01 | 300.11 | -18.53 | 63.43 | 0.3446 | 838.7 | 781.7 | |
0.00 | 1.62 | 0.00 | 0.86 | 14.05 | 299.92 | -18.71 | 66.23 | 0.3415 | 783.0 | 605.1 |
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. |
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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. |
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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. |