group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
1.22 | 14.19 | 2.16 | 43.30 | -22.38 | 153.64 | 77.59 | 246.14 | 0.9851 | 169.1 | -13.1 |
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-10-19 15:59:00 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 | 7.40 | 0.00 | 30.95 | -22.56 | 156.46 | 80.41 | 246.46 | 0.9937 | -272.0 | -51.5 | |
0.00 | 0.96 | 0.00 | 1.96 | -21.47 | 148.56 | 72.50 | 246.21 | 0.9710 | 317.0 | 340.5 | |
0.00 | 0.52 | 0.00 | 1.02 | -21.93 | 147.85 | 71.80 | 245.61 | 0.9687 | 377.0 | 372.0 | |
0.52 | 5.31 | 0.93 | 9.37 | -21.96 | 146.09 | 70.03 | 245.21 | 0.9614 | 252.8 | 1.5 | |
0.70 | -4.00 | 1.23 | -4.00 | -22.11 | 145.97 | 69.92 | 245.03 | 0.9611 | 175.1 | 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. |
||
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. |