SDO HMI 2011-10-17 11:59:01 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 |
| 26.09 | 175.84 | 15.34 | 103.41 | -26.63 | 37.17 | 4.23 | 187.03 | 0.5409 | 1096.2 | 369.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-17 11:59:01 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 |
| 26.09 | 172.43 | 15.34 | 101.41 | -26.62 | 37.25 | 4.31 | 187.16 | 0.5408 | 1189.8 | 365.8 | |
| 0.00 | 0.79 | 0.00 | 0.44 | -22.96 | 33.52 | 0.58 | 181.11 | 0.4817 | 612.0 | 511.6 | |
| 0.00 | 2.18 | 0.00 | 1.30 | -28.17 | 33.44 | 0.50 | 180.79 | 0.5597 | 644.0 | 534.3 | |
| 0.00 | 0.44 | 0.00 | 0.26 | -28.83 | 30.31 | -2.63 | 175.94 | 0.5705 | 597.0 | 511.6 | |
| 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. | |