SDO HMI 2011-08-30 15:59:08 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 |
| 36.80 | 177.83 | 18.64 | 90.06 | 18.18 | 299.66 | -4.65 | 21.86 | 0.2076 | -1110.0 | -417.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-30 15:59:08 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 | 1.88 | 0.00 | 0.94 | 14.07 | 301.99 | -2.32 | 18.01 | 0.1274 | -1008.0 | -816.7 | |
| 0.00 | 2.15 | 0.00 | 1.07 | 14.47 | 301.21 | -3.10 | 22.35 | 0.1385 | -771.0 | -637.8 | |
| 36.80 | 164.31 | 18.64 | 83.22 | 18.26 | 299.74 | -4.57 | 21.41 | 0.2082 | -1198.8 | -385.6 | |
| 0.00 | 0.98 | 0.00 | 0.50 | 20.86 | 299.57 | -4.74 | 18.03 | 0.2507 | -790.0 | -573.5 | |
| 0.00 | 2.42 | 0.00 | 1.23 | 17.40 | 297.53 | -6.78 | 32.22 | 0.2122 | -862.0 | -637.1 | |
| 0.00 | 5.19 | 0.00 | 2.64 | 18.38 | 297.21 | -7.10 | 30.96 | 0.2292 | -878.0 | -802.2 | |
| 0.00 | 0.90 | 0.00 | 0.46 | 18.28 | 296.60 | -7.71 | 33.29 | 0.2332 | -695.0 | -596.4 | |
| 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. | |