group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 7.79 | 0.00 | 4.91 | 17.75 | 225.38 | 31.88 | 305.13 | 0.6149 | 364.0 | 442.3 |
previous
or next observation for the same group /
back to the solar disc SDO HMI 2012-05-10 18:59:08 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 | 0.81 | 0.00 | 0.60 | 14.33 | 238.49 | 44.98 | 292.55 | 0.7439 | -568.0 | -460.4 | |
0.00 | 1.07 | 0.00 | 0.67 | 18.67 | 223.90 | 30.40 | 307.21 | 0.6042 | 501.0 | 378.6 | |
0.00 | 0.81 | 0.00 | 0.50 | 18.40 | 223.63 | 30.13 | 307.07 | 0.5991 | 526.0 | 456.9 | |
0.00 | 3.67 | 0.00 | 2.26 | 17.98 | 223.51 | 30.01 | 306.57 | 0.5945 | 728.0 | 639.7 | |
0.00 | 1.43 | 0.00 | 0.88 | 18.43 | 223.37 | 29.87 | 307.33 | 0.5965 | 633.0 | 585.8 |
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. |