group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 11.29 | 0.00 | 6.58 | 17.96 | 223.23 | 24.22 | 312.33 | 0.5299 | 653.8 | 589.3 |
previous
or next observation for the same group /
back to the solar disc SDO HMI 2012-05-10 08:59:08 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 | 1.34 | 0.00 | 0.78 | 17.32 | 223.79 | 24.78 | 310.74 | 0.5302 | 588.0 | 411.3 | |
0.00 | 2.87 | 0.00 | 1.68 | 18.47 | 223.47 | 24.46 | 312.80 | 0.5374 | 490.0 | 576.1 | |
0.00 | 6.18 | 0.00 | 3.61 | 17.95 | 223.36 | 24.35 | 312.16 | 0.5312 | 697.0 | 619.7 | |
0.00 | 0.90 | 0.00 | 0.51 | 17.34 | 220.68 | 21.68 | 314.48 | 0.4961 | 840.0 | 690.8 |
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. |