SDO HMI 2011-08-30 16:59:08 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 |
| 15.67 | 40.90 | 13.63 | 35.66 | 18.39 | 359.55 | 55.79 | 287.44 | 0.8247 | -387.1 | -320.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-30 16:59:08 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 | 1.34 | 0.00 | 1.26 | 18.26 | 2.46 | 58.70 | 287.09 | 0.8510 | -519.0 | -417.9 | |
| 12.44 | 29.81 | 10.94 | 26.19 | 18.49 | 359.90 | 56.14 | 287.54 | 0.8281 | -692.4 | -498.8 | |
| 0.00 | 1.25 | 0.00 | 1.09 | 18.04 | 359.39 | 55.63 | 287.03 | 0.8230 | -280.0 | -258.2 | |
| 0.36 | -2.00 | 0.31 | -2.00 | 18.84 | 359.56 | 55.80 | 287.99 | 0.8251 | -663.5 | 999999 | |
| 0.00 | 0.90 | 0.00 | 0.77 | 19.16 | 359.20 | 55.45 | 288.41 | 0.8221 | -447.0 | -443.2 | |
| 0.00 | 1.07 | 0.00 | 0.91 | 18.45 | 358.41 | 54.65 | 287.62 | 0.8140 | 392.0 | 337.8 | |
| 0.00 | 1.70 | 0.00 | 1.43 | 17.68 | 357.94 | 54.19 | 286.71 | 0.8089 | 398.0 | 281.1 | |
| 2.24 | 2.95 | 1.86 | 2.45 | 17.66 | 357.55 | 53.80 | 286.71 | 0.8050 | 522.5 | 551.6 | |
| 0.63 | 1.88 | 0.52 | 1.56 | 17.89 | 357.39 | 53.63 | 287.02 | 0.8036 | 634.4 | 477.6 | |
| 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. | |