SDO HMI 2011-10-18 17:59:01 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 |
| 0.00 | 6.11 | 0.00 | 3.80 | -31.54 | 19.68 | 3.23 | 184.62 | 0.6082 | -698.2 | -539.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-18 17:59:01 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 |
| 0.00 | 1.05 | 0.00 | 0.64 | -29.60 | 21.47 | 5.02 | 187.51 | 0.5837 | -767.0 | -577.3 | |
| 0.00 | 0.96 | 0.00 | 0.58 | -29.42 | 21.04 | 4.59 | 186.93 | 0.5803 | -736.0 | -611.4 | |
| 0.00 | 1.92 | 0.00 | 1.22 | -33.11 | 19.33 | 2.89 | 183.86 | 0.6293 | -725.0 | -543.5 | |
| 0.00 | 0.96 | 0.00 | 0.61 | -33.18 | 18.62 | 2.17 | 182.90 | 0.6297 | -558.0 | -444.8 | |
| 0.00 | 1.22 | 0.00 | 0.75 | -30.95 | 18.53 | 2.09 | 183.00 | 0.5989 | -705.0 | -522.9 | |
| 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. | |