SDO HMI 2011-12-18 01:58:55 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 |
| 38.28 | 204.36 | 31.60 | 168.57 | -18.64 | 352.38 | 51.28 | 247.47 | 0.8026 | 708.7 | 327.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-18 01:58:55 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 | 1.28 | 0.00 | 1.11 | -18.38 | 354.86 | 53.76 | 248.40 | 0.8254 | -471.0 | -349.4 | |
| 0.00 | 1.11 | 0.00 | 0.96 | -18.23 | 354.63 | 53.53 | 248.53 | 0.8230 | -383.0 | -271.1 | |
| 0.00 | 0.85 | 0.00 | 0.73 | -19.01 | 354.20 | 53.10 | 247.49 | 0.8207 | -490.0 | -407.8 | |
| 3.91 | 192.69 | 3.30 | 158.93 | -19.05 | 353.24 | 52.14 | 247.19 | 0.8118 | 304.4 | 338.5 | |
| 32.50 | -4.00 | 26.78 | -4.00 | -18.51 | 352.30 | 51.20 | 247.60 | 0.8016 | 937.8 | 999999 | |
| 0.68 | -4.00 | 0.55 | -4.00 | -18.40 | 351.71 | 50.60 | 247.58 | 0.7955 | 1037.1 | 999999 | |
| 0.00 | 1.45 | 0.00 | 1.15 | -18.16 | 350.74 | 49.64 | 247.61 | 0.7853 | 348.0 | 271.6 | |
| 1.19 | 2.13 | 0.97 | 1.74 | -20.30 | 351.54 | 50.43 | 245.21 | 0.7987 | 261.1 | 314.5 | |
| 0.00 | 1.19 | 0.00 | 0.97 | -20.62 | 351.18 | 50.08 | 244.72 | 0.7962 | 422.0 | 358.1 | |
| 0.00 | 1.70 | 0.00 | 1.38 | -20.37 | 350.97 | 49.87 | 244.95 | 0.7935 | 761.0 | 595.5 | |
| 0.00 | 0.94 | 0.00 | 0.76 | -20.62 | 350.94 | 49.84 | 244.64 | 0.7938 | 498.0 | 407.6 | |
| 0.00 | 1.02 | 0.00 | 0.84 | -22.48 | 351.32 | 50.22 | 242.51 | 0.8028 | 434.0 | 333.2 | |
| 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. | |