SDO HMI 2011-10-18 19:59:01 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 7.50 | 31.37 | 16.76 | 80.03 | 20.10 | 95.43 | 80.09 | 289.44 | 0.9811 | 133.0 | -25.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-18 19:59:01 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 | 2.61 | 0.00 | 9.46 | 19.19 | 98.96 | 83.62 | 288.66 | 0.9912 | 286.0 | 110.2 | |
| 0.00 | 4.01 | 0.00 | 12.89 | 19.41 | 97.98 | 82.63 | 288.83 | 0.9889 | -596.0 | -485.3 | |
| 0.00 | 1.92 | 0.00 | 6.68 | 19.71 | 98.58 | 83.23 | 289.15 | 0.9903 | -123.0 | -5.5 | |
| 1.05 | 9.41 | 2.42 | 21.87 | 20.60 | 94.19 | 78.84 | 289.90 | 0.9776 | 127.7 | 30.1 | |
| 1.31 | -4.00 | 3.09 | -4.00 | 20.89 | 94.58 | 79.24 | 290.20 | 0.9789 | -310.9 | 999999 | |
| 4.18 | 13.42 | 9.04 | 29.13 | 20.28 | 93.26 | 77.91 | 289.55 | 0.9744 | 351.9 | 158.5 | |
| 0.96 | -4.00 | 2.21 | -4.00 | 20.86 | 94.18 | 78.84 | 290.16 | 0.9776 | 240.9 | 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. | |