SDO HMI 2011-02-25 05:58:58 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 |
| 5.17 | 24.88 | 8.48 | 40.17 | 15.85 | 178.77 | -69.07 | 70.74 | 0.9530 | 125.2 | 299.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-25 05:58:58 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 | 1.29 | 0.00 | 2.07 | 16.92 | 179.23 | -68.62 | 69.55 | 0.9522 | -55.0 | 29.0 | |
| 0.00 | 0.95 | 0.00 | 1.50 | 15.86 | 179.09 | -68.75 | 70.67 | 0.9515 | 522.0 | 465.8 | |
| 2.67 | 14.55 | 4.16 | 22.66 | 15.16 | 179.33 | -68.51 | 71.32 | 0.9494 | 473.0 | 449.1 | |
| 2.50 | 5.68 | 4.32 | 9.83 | 17.10 | 177.74 | -70.10 | 69.71 | 0.9595 | -319.9 | -199.6 | |
| 0.00 | 2.41 | 0.00 | 4.11 | 16.17 | 177.78 | -70.07 | 70.65 | 0.9583 | 384.0 | 372.0 | |
| 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. | |