SDO HMI 2011-09-02 08:59:08 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 |
| 18.97 | 81.45 | 11.10 | 47.74 | 18.95 | 299.41 | 30.87 | 294.42 | 0.5352 | -922.8 | -401.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-09-02 08:59:08 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 |
| 18.97 | 73.57 | 11.10 | 43.10 | 18.71 | 299.43 | 30.90 | 293.98 | 0.5344 | -1063.4 | -395.5 | |
| 0.00 | 4.30 | 0.00 | 2.54 | 21.17 | 299.48 | 30.94 | 298.29 | 0.5466 | -905.0 | -731.5 | |
| 0.00 | 1.88 | 0.00 | 1.10 | 21.31 | 298.87 | 30.33 | 298.89 | 0.5395 | -756.0 | -421.2 | |
| 0.00 | 1.70 | 0.00 | 1.00 | 21.09 | 298.75 | 30.21 | 298.60 | 0.5368 | 453.0 | 263.7 | |
| 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. | |