SDO HMI 2011-10-20 15:59:01 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 |
| 44.74 | 248.92 | 50.61 | 281.83 | 27.63 | 54.63 | 63.46 | 298.15 | 0.9007 | -668.4 | -128.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-20 15:59:01 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 |
| 6.70 | 246.13 | 7.71 | 278.97 | 27.61 | 55.17 | 64.00 | 298.05 | 0.9042 | 344.7 | -124.4 | |
| 36.91 | -1.00 | 41.62 | -1.00 | 27.62 | 54.57 | 63.40 | 298.14 | 0.9003 | -872.0 | 999999 | |
| 1.13 | -1.00 | 1.28 | -1.00 | 28.29 | 54.53 | 63.35 | 298.89 | 0.9007 | -686.1 | 999999 | |
| 0.00 | 0.44 | 0.00 | 0.45 | 27.20 | 51.98 | 60.81 | 298.05 | 0.8818 | -585.0 | -577.0 | |
| 0.00 | 1.04 | 0.00 | 1.08 | 27.06 | 51.78 | 60.61 | 297.92 | 0.8801 | -501.0 | -401.8 | |
| 0.00 | 0.70 | 0.00 | 0.74 | 28.02 | 52.55 | 61.38 | 298.88 | 0.8869 | -562.0 | -501.5 | |
| 0.00 | 0.61 | 0.00 | 0.59 | 27.74 | 49.39 | 58.21 | 299.11 | 0.8632 | -339.0 | -406.3 | |
| 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. | |