SDO HMI 2014-04-27 12:00:35 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 | 7.75 | 0.00 | 5.49 | -20.89 | 137.99 | 43.91 | 244.96 | 0.7172 | -431.1 | -362.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-27 12:00:35 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 | 1.07 | 0.00 | 0.80 | -20.95 | 141.48 | 47.40 | 245.97 | 0.7549 | 648.0 | 460.2 | |
| 0.00 | 0.89 | 0.00 | 0.63 | -20.98 | 137.83 | 43.75 | 244.80 | 0.7158 | -624.0 | -555.3 | |
| 0.00 | 1.25 | 0.00 | 0.88 | -20.80 | 137.58 | 43.50 | 244.96 | 0.7126 | -597.0 | -476.3 | |
| 0.00 | 1.16 | 0.00 | 0.81 | -20.34 | 137.38 | 43.29 | 245.53 | 0.7088 | -647.0 | -518.2 | |
| 0.00 | 1.34 | 0.00 | 0.94 | -21.18 | 137.68 | 43.60 | 244.48 | 0.7148 | -411.0 | -411.8 | |
| 0.00 | 0.71 | 0.00 | 0.50 | -21.40 | 137.18 | 43.10 | 244.01 | 0.7100 | -529.0 | -465.9 | |
| 0.00 | 0.71 | 0.00 | 0.50 | -21.19 | 136.92 | 42.84 | 244.21 | 0.7065 | -658.0 | -597.4 | |
| 0.00 | 0.62 | 0.00 | 0.43 | -20.32 | 136.62 | 42.54 | 245.30 | 0.7002 | -631.0 | -595.6 | |
| 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. | |