SDO HMI 2011-12-08 12:58:56 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 |
| 2.98 | 13.73 | 1.65 | 7.60 | -25.49 | 74.82 | 7.97 | 196.20 | 0.4510 | -417.8 | -176.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-08 12:58:56 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 | 1.11 | 0.00 | 0.62 | -25.40 | 79.29 | 12.44 | 204.42 | 0.4726 | 814.0 | 742.0 | |
| 0.00 | 2.73 | 0.00 | 1.51 | -24.52 | 77.78 | 10.92 | 202.58 | 0.4509 | 987.0 | 698.9 | |
| 2.98 | 5.28 | 1.65 | 2.93 | -25.66 | 73.90 | 7.05 | 194.34 | 0.4484 | -926.1 | -775.0 | |
| 0.00 | 0.77 | 0.00 | 0.42 | -25.43 | 73.82 | 6.97 | 194.33 | 0.4446 | -776.0 | -603.9 | |
| 0.00 | 0.77 | 0.00 | 0.42 | -25.62 | 73.60 | 6.75 | 193.78 | 0.4468 | -797.0 | -651.6 | |
| 0.00 | 1.02 | 0.00 | 0.57 | -26.31 | 72.81 | 5.96 | 191.87 | 0.4545 | -912.0 | -718.2 | |
| 0.00 | 1.11 | 0.00 | 0.61 | -25.49 | 72.67 | 5.82 | 192.01 | 0.4415 | -710.0 | -589.8 | |
| 0.00 | 0.94 | 0.00 | 0.52 | -26.45 | 72.62 | 5.77 | 191.43 | 0.4559 | -692.0 | -537.1 | |
| 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. | |