SDO HMI 2011-02-16 16:58:57 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 |
| 12.77 | 23.92 | 17.92 | 33.73 | 19.40 | 65.57 | 65.23 | 293.83 | 0.9363 | 146.6 | 106.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-16 16:58:57 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 |
| 0.77 | 7.97 | 1.29 | 13.21 | 18.55 | 69.57 | 69.23 | 291.88 | 0.9566 | 154.6 | -16.4 | |
| 4.29 | -1.00 | 7.07 | -1.00 | 18.42 | 69.28 | 68.94 | 291.82 | 0.9551 | -340.8 | 999999 | |
| 0.00 | 1.46 | 0.00 | 2.38 | 18.70 | 69.01 | 68.67 | 292.18 | 0.9541 | -308.0 | -240.8 | |
| 0.00 | 1.63 | 0.00 | 2.20 | 19.42 | 64.58 | 64.24 | 294.06 | 0.9318 | 127.0 | 125.8 | |
| 0.00 | 0.60 | 0.00 | 0.74 | 19.80 | 62.12 | 61.78 | 295.16 | 0.9177 | 373.0 | 388.6 | |
| 6.34 | 11.23 | 7.85 | 13.93 | 20.09 | 62.12 | 61.78 | 295.47 | 0.9183 | 563.9 | 378.5 | |
| 1.37 | -6.00 | 1.71 | -6.00 | 20.36 | 62.24 | 61.90 | 295.72 | 0.9196 | 385.6 | 999999 | |
| 0.00 | 1.03 | 0.00 | 1.27 | 22.37 | 61.35 | 61.00 | 298.08 | 0.9185 | 145.0 | 91.2 | |
| 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. | |