SDO HMI 2014-08-20 14:00:38 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 |
| 0.00 | 18.54 | 0.00 | 9.53 | 8.81 | 26.91 | 15.26 | 279.42 | 0.2650 | -84.9 | -268.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-20 14:00:38 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 | 1.71 | 0.00 | 0.89 | 7.08 | 30.19 | 18.53 | 271.80 | 0.3169 | -915.0 | -764.2 | |
| 0.00 | 1.44 | 0.00 | 0.75 | 8.29 | 29.47 | 17.81 | 275.77 | 0.3056 | -872.0 | -693.8 | |
| 0.00 | 1.62 | 0.00 | 0.84 | 7.69 | 29.21 | 17.56 | 273.82 | 0.3010 | -825.0 | -661.9 | |
| 0.00 | 1.35 | 0.00 | 0.70 | 8.62 | 28.87 | 17.22 | 276.99 | 0.2962 | -887.0 | -730.3 | |
| 0.00 | 5.76 | 0.00 | 2.98 | 8.35 | 28.60 | 16.95 | 276.16 | 0.2914 | -506.0 | -804.8 | |
| 0.00 | 1.44 | 0.00 | 0.73 | 9.90 | 23.68 | 12.03 | 285.14 | 0.2137 | 745.0 | 659.1 | |
| 0.00 | 2.25 | 0.00 | 1.14 | 10.06 | 23.41 | 11.75 | 286.18 | 0.2098 | 802.0 | 632.7 | |
| 0.00 | 1.08 | 0.00 | 0.55 | 9.65 | 22.83 | 11.17 | 284.90 | 0.1986 | 815.0 | 556.0 | |
| 0.00 | 1.89 | 0.00 | 0.95 | 10.61 | 22.08 | 10.42 | 290.71 | 0.1910 | 879.0 | 635.7 | |
| 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. | |