SDO HMI 2011-02-25 08:58:58 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 |
| 6.20 | 28.16 | 9.38 | 42.51 | 16.15 | 178.52 | -67.69 | 70.11 | 0.9461 | 169.9 | 245.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-25 08:58:58 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 |
| 0.00 | 0.77 | 0.00 | 1.15 | 16.98 | 179.28 | -66.93 | 69.08 | 0.9435 | -145.0 | -24.4 | |
| 0.00 | 1.46 | 0.00 | 2.13 | 15.93 | 179.30 | -66.91 | 70.16 | 0.9419 | 470.0 | 469.8 | |
| 3.27 | 14.21 | 4.73 | 20.44 | 15.23 | 179.28 | -66.93 | 70.88 | 0.9410 | 541.8 | 459.4 | |
| 0.00 | 1.64 | 0.00 | 2.41 | 15.65 | 179.01 | -67.20 | 70.52 | 0.9431 | 405.0 | 309.6 | |
| 2.93 | 7.06 | 4.65 | 11.22 | 17.16 | 177.73 | -68.48 | 69.27 | 0.9518 | -288.0 | -309.7 | |
| 0.00 | 1.21 | 0.00 | 2.33 | 19.69 | 174.83 | -71.38 | 67.38 | 0.9677 | 233.0 | 169.0 | |
| 0.00 | 1.81 | 0.00 | 2.83 | 16.19 | 177.88 | -68.33 | 70.23 | 0.9498 | 257.0 | 290.9 | |
| 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. | |