SDO HMI 2011-10-18 12:59:01 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 |
| 24.41 | 165.59 | 15.10 | 102.34 | -26.76 | 37.00 | 17.79 | 207.16 | 0.5999 | 920.4 | 344.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-18 12:59:01 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 | 0.96 | 0.00 | 0.60 | -27.40 | 38.36 | 19.16 | 208.34 | 0.6161 | -654.0 | -463.2 | |
| 24.41 | 157.48 | 15.10 | 97.45 | -26.79 | 37.20 | 17.99 | 207.40 | 0.6013 | 1136.3 | 338.0 | |
| 0.00 | 2.53 | 0.00 | 1.47 | -22.41 | 33.86 | 14.66 | 206.61 | 0.5245 | 920.0 | 633.8 | |
| 0.00 | 0.78 | 0.00 | 0.47 | -26.61 | 33.17 | 13.96 | 202.12 | 0.5751 | 791.0 | 633.3 | |
| 0.00 | 0.70 | 0.00 | 0.43 | -27.42 | 33.20 | 14.00 | 201.58 | 0.5859 | 458.0 | 464.4 | |
| 0.00 | 0.70 | 0.00 | 0.44 | -29.55 | 33.25 | 14.04 | 200.20 | 0.6134 | 499.0 | 517.5 | |
| 0.00 | 0.87 | 0.00 | 0.53 | -27.83 | 30.90 | 11.70 | 198.07 | 0.5802 | 571.0 | 463.1 | |
| 0.00 | 0.61 | 0.00 | 0.37 | -27.84 | 29.66 | 10.46 | 196.27 | 0.5752 | 810.0 | 673.4 | |
| 0.00 | 0.96 | 0.00 | 0.58 | -28.60 | 29.67 | 10.46 | 195.87 | 0.5854 | 708.0 | 633.0 | |
| 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. | |