group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
33.65 | 191.90 | 72.30 | 418.72 | 13.68 | 173.89 | 76.88 | 283.57 | 0.9714 | 102.0 | 77.2 |
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back to the solar disc SDO HMI 2010-11-19 08:58:57 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 |
5.58 | 94.49 | 16.34 | 272.25 | 12.80 | 177.59 | 80.58 | 282.59 | 0.9865 | 454.0 | 21.0 | |
10.90 | -1.00 | 30.23 | -1.00 | 12.95 | 177.04 | 80.03 | 282.74 | 0.9849 | -499.4 | 999999 | |
2.06 | 97.41 | 3.17 | 146.47 | 15.12 | 168.16 | 71.15 | 285.18 | 0.9480 | -134.9 | 182.3 | |
15.11 | -3.00 | 22.56 | -3.00 | 15.14 | 167.61 | 70.59 | 285.23 | 0.9450 | 686.3 | 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. |