group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
1.39 | 15.15 | 2.60 | 46.51 | -22.32 | 152.53 | 77.58 | 246.20 | 0.9848 | 191.5 | -35.1 |
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-10-19 17:59:00 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 | 5.92 | 0.00 | 28.45 | -22.58 | 156.21 | 81.26 | 246.57 | 0.9952 | -338.0 | -91.6 | |
0.00 | 1.39 | 0.00 | 3.07 | -21.49 | 148.70 | 73.75 | 246.44 | 0.9756 | 310.0 | 327.1 | |
0.00 | 1.48 | 0.00 | 3.19 | -21.67 | 148.27 | 73.31 | 246.17 | 0.9742 | 354.0 | 364.1 | |
1.39 | 6.36 | 2.60 | 11.80 | -22.10 | 145.82 | 70.87 | 245.25 | 0.9651 | 287.1 | -119.6 |
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. |