SDO HMI 2011-12-15 04:58:55 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 |
| 2.81 | 13.11 | 1.50 | 7.08 | -18.62 | 323.63 | -15.36 | 140.64 | 0.3978 | -506.0 | -182.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-15 04:58:55 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 | 3.15 | 0.00 | 1.66 | -16.48 | 326.70 | -12.29 | 142.82 | 0.3393 | 1055.0 | 838.3 | |
| 0.00 | 1.45 | 0.00 | 0.79 | -21.89 | 325.72 | -13.26 | 149.31 | 0.4190 | -836.0 | -627.8 | |
| 0.00 | 0.94 | 0.00 | 0.52 | -23.79 | 324.63 | -14.35 | 149.80 | 0.4528 | -735.0 | -555.8 | |
| 2.81 | 3.66 | 1.50 | 1.96 | -17.11 | 323.28 | -15.71 | 137.26 | 0.3829 | -860.0 | -654.7 | |
| 0.00 | 2.21 | 0.00 | 1.20 | -18.31 | 322.23 | -16.75 | 137.64 | 0.4079 | -561.0 | -549.3 | |
| 0.00 | 1.70 | 0.00 | 0.95 | -20.28 | 318.47 | -20.52 | 135.37 | 0.4700 | -922.0 | -695.3 | |
| 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. | |