| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 10.62 | 30.15 | 5.80 | 16.45 | -17.97 | 114.41 | 1.09 | 182.43 | 0.4210 | 38.1 | -353.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-17 20:59:09 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 | 0.36 | 0.00 | 0.20 | -18.56 | 117.11 | 3.79 | 188.34 | 0.4337 | 720.0 | 637.5 | |
| 4.59 | 6.12 | 2.52 | 3.36 | -18.40 | 116.95 | 3.63 | 188.04 | 0.4307 | 942.3 | 743.9 | |
| 0.00 | 2.43 | 0.00 | 1.33 | -18.52 | 115.57 | 2.25 | 184.98 | 0.4303 | 725.0 | 577.1 | |
| 0.00 | 4.68 | 0.00 | 2.54 | -17.51 | 114.09 | 0.77 | 181.79 | 0.4129 | -702.0 | -583.8 | |
| 0.00 | 0.99 | 0.00 | 0.54 | -18.45 | 113.75 | 0.43 | 180.95 | 0.4276 | -754.0 | -553.3 | |
| 0.00 | 0.99 | 0.00 | 0.54 | -17.75 | 113.71 | 0.39 | 180.90 | 0.4164 | -963.0 | -757.8 | |
| 3.15 | 10.08 | 1.72 | 5.50 | -17.95 | 113.43 | 0.11 | 180.24 | 0.4196 | -993.9 | -764.0 | |
| 2.88 | 3.33 | 1.56 | 1.80 | -17.01 | 112.98 | -0.34 | 179.20 | 0.4047 | 976.0 | 888.6 | |
| 0.00 | 1.17 | 0.00 | 0.64 | -18.92 | 112.72 | -0.60 | 178.69 | 0.4351 | -764.0 | -651.2 | |
| 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. | |