SDO HMI 2011-08-28 22:59:08 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 |
| 18.01 | 68.02 | 28.01 | 108.41 | -20.54 | 259.41 | -67.45 | 114.44 | 0.9510 | 212.2 | -53.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 22:59:08 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 | 1.43 | 0.00 | 2.15 | -21.54 | 260.91 | -65.95 | 115.84 | 0.9452 | 262.0 | 301.2 | |
| 5.20 | 44.00 | 7.66 | 67.04 | -20.78 | 261.09 | -65.77 | 115.12 | 0.9431 | 622.9 | 132.8 | |
| 9.05 | -2.00 | 13.91 | -2.00 | -21.11 | 260.23 | -66.63 | 115.22 | 0.9480 | 302.1 | 999999 | |
| 1.97 | 4.21 | 3.17 | 6.79 | -20.75 | 259.13 | -67.73 | 114.56 | 0.9528 | 85.4 | 7.0 | |
| 0.00 | 7.44 | 0.00 | 12.45 | -19.84 | 258.13 | -68.73 | 113.39 | 0.9563 | -626.0 | -426.9 | |
| 0.00 | 0.90 | 0.00 | 1.69 | -20.48 | 256.06 | -70.80 | 113.54 | 0.9662 | -201.0 | -226.9 | |
| 0.00 | 1.08 | 0.00 | 1.96 | -19.41 | 256.50 | -70.37 | 112.56 | 0.9632 | -337.0 | -336.2 | |
| 1.79 | 8.96 | 3.27 | 16.33 | -19.16 | 256.35 | -70.51 | 112.28 | 0.9635 | -473.5 | -356.8 | |
| 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. | |