SDO HMI 2011-08-17 12:59:09 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 15.31 | 82.04 | 18.23 | 99.42 | -20.65 | 56.73 | -61.02 | 116.24 | 0.9140 | 330.5 | 80.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-17 12:59:09 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 |
| 10.27 | 68.81 | 12.15 | 81.99 | -20.76 | 57.44 | -60.31 | 116.57 | 0.9099 | 591.0 | 104.5 | |
| 5.04 | -1.00 | 6.08 | -1.00 | -20.88 | 56.89 | -60.86 | 116.52 | 0.9138 | 168.8 | 999999 | |
| 0.00 | 1.17 | 0.00 | 1.38 | -18.81 | 56.97 | -60.77 | 114.38 | 0.9087 | 416.0 | 385.0 | |
| 0.00 | 4.50 | 0.00 | 5.53 | -19.57 | 56.01 | -61.74 | 114.89 | 0.9165 | 217.0 | 74.6 | |
| 0.00 | 1.44 | 0.00 | 1.76 | -19.31 | 56.05 | -61.70 | 114.62 | 0.9157 | 526.0 | 455.1 | |
| 0.00 | 1.89 | 0.00 | 2.48 | -19.70 | 54.22 | -63.52 | 114.50 | 0.9277 | 196.0 | 125.7 | |
| 0.00 | 0.90 | 0.00 | 1.25 | -20.35 | 53.13 | -64.62 | 114.86 | 0.9351 | -388.0 | -409.4 | |
| 0.00 | 1.44 | 0.00 | 2.14 | -20.66 | 51.54 | -66.21 | 114.75 | 0.9442 | -456.0 | -393.9 | |
| 0.00 | 1.89 | 0.00 | 2.89 | -20.95 | 51.03 | -66.72 | 114.91 | 0.9472 | -380.0 | -297.8 | |
| 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. | |