SDO HMI 2011-02-28 10:58:58 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 |
| 3.10 | 15.25 | 1.71 | 8.51 | -22.40 | 182.02 | -23.58 | 126.34 | 0.4608 | 52.0 | 288.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-28 10:58:58 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 |
| 1.38 | 8.88 | 0.76 | 4.90 | -21.61 | 183.20 | -22.40 | 126.03 | 0.4399 | 1069.1 | 881.6 | |
| 1.72 | -1.00 | 0.95 | -1.00 | -21.72 | 183.01 | -22.59 | 126.05 | 0.4432 | 804.8 | 999999 | |
| 0.00 | 1.64 | 0.00 | 0.92 | -23.80 | 182.33 | -23.27 | 129.21 | 0.4685 | 727.0 | 649.9 | |
| 0.00 | 3.10 | 0.00 | 1.76 | -23.38 | 180.13 | -25.47 | 126.29 | 0.4917 | -774.0 | -541.3 | |
| 0.00 | 0.60 | 0.00 | 0.34 | -21.64 | 180.01 | -25.59 | 123.01 | 0.4807 | -526.0 | -419.9 | |
| 0.00 | 1.03 | 0.00 | 0.59 | -23.81 | 179.39 | -26.21 | 126.37 | 0.5039 | -707.0 | -587.3 | |
| 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. | |