group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
9.78 | 85.77 | 23.81 | 459.91 | 13.54 | 173.91 | 84.60 | 283.42 | 0.9933 | 309.7 | 28.8 |
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back to the solar disc SDO HMI 2010-11-19 22:58:57 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 | 3.09 | 0.00 | 17.79 | 12.44 | 174.76 | 85.45 | 282.30 | 0.9967 | -319.0 | -267.8 | |
0.00 | 29.42 | 0.00 | 312.92 | 13.02 | 176.40 | 87.09 | 282.92 | 0.9986 | 113.0 | -12.6 | |
2.23 | 53.26 | 5.70 | 129.20 | 14.95 | 168.36 | 79.05 | 284.79 | 0.9820 | -187.4 | 201.6 | |
7.55 | -3.00 | 18.11 | -3.00 | 14.95 | 167.56 | 78.25 | 284.80 | 0.9793 | 511.8 | 999999 |
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. |