SDO HMI 2011-08-18 16:59:09 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 |
| 20.16 | 108.44 | 16.44 | 88.47 | -20.88 | 56.71 | -45.61 | 122.86 | 0.7968 | 476.4 | 217.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-18 16:59:09 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 |
| 12.42 | 93.59 | 10.02 | 75.85 | -20.90 | 57.32 | -45.00 | 123.20 | 0.7916 | 866.4 | 233.2 | |
| 4.86 | -1.00 | 3.98 | -1.00 | -21.23 | 56.68 | -45.64 | 123.22 | 0.7988 | 514.6 | 999999 | |
| 1.98 | -1.00 | 1.62 | -1.00 | -20.93 | 56.62 | -45.70 | 122.85 | 0.7980 | 441.5 | 999999 | |
| 0.00 | 1.08 | 0.00 | 0.89 | -20.71 | 56.37 | -45.95 | 122.48 | 0.7991 | 247.0 | 139.9 | |
| 0.00 | 0.72 | 0.00 | 0.57 | -18.63 | 56.86 | -45.45 | 120.36 | 0.7849 | 528.0 | 497.1 | |
| 0.00 | 1.08 | 0.00 | 0.86 | -18.39 | 56.90 | -45.42 | 120.11 | 0.7835 | 546.0 | 462.5 | |
| 0.00 | 0.81 | 0.00 | 0.65 | -18.54 | 56.66 | -45.65 | 120.16 | 0.7864 | 631.0 | 516.4 | |
| 0.00 | 2.25 | 0.00 | 1.83 | -19.52 | 56.22 | -46.10 | 121.05 | 0.7949 | 495.0 | 414.8 | |
| 0.00 | 1.53 | 0.00 | 1.26 | -19.85 | 55.86 | -46.46 | 121.25 | 0.7997 | 492.0 | 407.9 | |
| 0.00 | 1.17 | 0.00 | 0.95 | -19.11 | 55.91 | -46.41 | 120.43 | 0.7960 | 363.0 | 407.7 | |
| 0.00 | 0.99 | 0.00 | 0.82 | -19.62 | 55.05 | -47.27 | 120.58 | 0.8059 | 414.0 | 338.4 | |
| 0.00 | 0.54 | 0.00 | 0.45 | -19.82 | 54.68 | -47.63 | 120.63 | 0.8100 | 285.0 | 279.2 | |
| 0.00 | 0.72 | 0.00 | 0.64 | -20.43 | 52.56 | -49.76 | 120.30 | 0.8306 | -656.0 | -492.9 | |
| 0.00 | 0.90 | 0.00 | 0.91 | -25.77 | 49.65 | -52.67 | 124.71 | 0.8731 | -359.0 | -331.2 | |
| 0.00 | 0.90 | 0.00 | 0.82 | -21.05 | 51.72 | -50.60 | 120.60 | 0.8400 | -574.0 | -483.6 | |
| 0.90 | 2.16 | 0.82 | 1.97 | -20.79 | 51.53 | -50.79 | 120.24 | 0.8406 | -374.4 | -526.9 | |
| 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. | |