SDO HMI 2011-08-28 18:59:08 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 |
| 27.42 | 155.19 | 15.72 | 89.07 | 17.89 | 299.99 | -29.08 | 66.44 | 0.5067 | -1046.1 | -410.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 18:59:08 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 |
| 27.42 | 150.44 | 15.72 | 86.25 | 17.83 | 300.08 | -28.99 | 66.50 | 0.5052 | -1220.0 | -415.1 | |
| 0.00 | 0.90 | 0.00 | 0.53 | 21.06 | 298.42 | -30.65 | 61.61 | 0.5429 | -744.0 | -661.6 | |
| 0.00 | 1.61 | 0.00 | 0.95 | 19.48 | 298.13 | -30.94 | 64.54 | 0.5390 | -686.0 | -536.0 | |
| 0.00 | 1.16 | 0.00 | 0.68 | 17.86 | 298.05 | -31.02 | 67.49 | 0.5331 | -655.0 | -496.2 | |
| 0.00 | 1.08 | 0.00 | 0.66 | 21.21 | 294.32 | -34.75 | 63.57 | 0.5956 | 633.0 | 499.2 | |
| 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. | |