SDO HMI 2011-10-17 09:59:01 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 |
| 25.40 | 174.14 | 14.91 | 102.28 | -26.61 | 37.03 | 3.00 | 185.00 | 0.5389 | 1065.5 | 392.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-17 09:59:01 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 |
| 25.40 | 165.85 | 14.91 | 97.42 | -26.61 | 37.27 | 3.24 | 185.39 | 0.5390 | 1205.0 | 384.8 | |
| 0.00 | 2.44 | 0.00 | 1.46 | -28.21 | 33.49 | -0.55 | 179.13 | 0.5603 | 669.0 | 546.1 | |
| 0.00 | 0.70 | 0.00 | 0.41 | -26.74 | 33.23 | -0.81 | 178.65 | 0.5389 | 525.0 | 362.1 | |
| 0.00 | 1.48 | 0.00 | 0.84 | -23.19 | 33.05 | -0.98 | 178.13 | 0.4856 | 752.0 | 647.7 | |
| 0.00 | 2.01 | 0.00 | 1.15 | -24.40 | 31.76 | -2.27 | 175.88 | 0.5050 | 710.0 | 496.3 | |
| 0.00 | 1.66 | 0.00 | 1.00 | -29.24 | 30.05 | -3.99 | 173.95 | 0.5781 | 592.0 | 492.6 | |
| 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. | |