SDO HMI 2011-08-28 13:59:08 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 |
| 0.45 | 8.71 | 0.25 | 5.02 | 19.42 | 0.93 | 29.10 | 296.44 | 0.5139 | -707.5 | -551.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-28 13:59:08 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 | 1.26 | 0.00 | 0.77 | 23.26 | 5.75 | 33.91 | 300.13 | 0.5949 | -579.0 | -354.9 | |
| 0.00 | 1.26 | 0.00 | 0.73 | 18.11 | 2.19 | 30.35 | 293.32 | 0.5250 | -619.0 | -544.0 | |
| 0.00 | 0.99 | 0.00 | 0.57 | 18.16 | 1.83 | 29.99 | 293.60 | 0.5204 | -634.0 | -496.5 | |
| 0.00 | 1.26 | 0.00 | 0.72 | 18.63 | 0.74 | 28.91 | 295.09 | 0.5078 | -649.0 | -518.6 | |
| 0.00 | 1.61 | 0.00 | 0.92 | 18.59 | 359.35 | 27.52 | 295.86 | 0.4886 | -758.0 | -704.6 | |
| 0.45 | 0.99 | 0.25 | 0.56 | 18.90 | 359.19 | 27.36 | 296.59 | 0.4881 | -916.2 | -802.0 | |
| 0.00 | 1.34 | 0.00 | 0.75 | 19.90 | 357.50 | 25.67 | 299.76 | 0.4711 | -745.0 | -542.7 | |
| 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. | |