group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 8.60 | 0.00 | 5.42 | 17.63 | 226.07 | 32.02 | 305.00 | 0.6161 | 392.4 | 401.5 |
previous
or next observation for the same group /
back to the solar disc SDO HMI 2012-05-10 17:59:08 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 | 1.25 | 0.00 | 0.92 | 14.34 | 238.47 | 44.42 | 292.80 | 0.7378 | -570.0 | -444.5 | |
0.00 | 0.54 | 0.00 | 0.33 | 18.66 | 223.94 | 29.88 | 307.64 | 0.5984 | 548.0 | 408.2 | |
0.00 | 1.79 | 0.00 | 1.10 | 18.45 | 223.64 | 29.59 | 307.62 | 0.5935 | 565.0 | 478.4 | |
0.00 | 2.78 | 0.00 | 1.70 | 18.00 | 223.52 | 29.46 | 307.08 | 0.5886 | 699.0 | 669.6 | |
0.00 | 2.24 | 0.00 | 1.37 | 18.48 | 223.39 | 29.34 | 307.88 | 0.5909 | 720.0 | 571.8 |
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. |