SDO HMI 2011-12-07 16:58:56 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 |
| 16.54 | 39.80 | 9.04 | 21.62 | -23.79 | 75.04 | -2.79 | 174.02 | 0.4088 | -838.8 | -618.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-07 16:58:56 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 | 1.70 | 0.00 | 0.89 | -18.30 | 80.11 | 2.29 | 186.84 | 0.3192 | 1042.0 | 867.8 | |
| 2.47 | 3.58 | 1.29 | 1.87 | -18.51 | 77.00 | -0.83 | 177.55 | 0.3208 | -1013.0 | -827.8 | |
| 0.00 | 4.86 | 0.00 | 2.53 | -17.95 | 75.92 | -1.91 | 174.16 | 0.3129 | -1019.0 | -793.2 | |
| 0.00 | 1.45 | 0.00 | 0.77 | -20.05 | 75.02 | -2.81 | 172.37 | 0.3490 | -922.0 | -693.9 | |
| 0.00 | 1.45 | 0.00 | 0.81 | -27.85 | 74.71 | -3.12 | 174.13 | 0.4731 | -887.0 | -749.3 | |
| 12.02 | 20.96 | 6.63 | 11.56 | -25.83 | 74.40 | -3.43 | 172.98 | 0.4424 | -985.2 | -651.7 | |
| 2.05 | 4.35 | 1.12 | 2.39 | -25.40 | 74.35 | -3.48 | 172.73 | 0.4358 | -1014.8 | -847.9 | |
| 0.00 | 1.45 | 0.00 | 0.80 | -25.86 | 73.64 | -4.19 | 171.46 | 0.4445 | -1016.0 | -789.6 | |
| 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. | |