SDO HMI 2011-10-21 09:59:01 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 |
| 0.00 | 11.15 | 0.00 | 6.04 | 25.41 | 328.72 | -12.56 | 28.77 | 0.3995 | -299.1 | -82.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-21 09:59:01 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 |
| 0.00 | 1.13 | 0.00 | 0.59 | 22.70 | 335.93 | -5.35 | 16.10 | 0.3114 | -705.0 | -581.2 | |
| 0.00 | 1.13 | 0.00 | 0.59 | 22.72 | 332.77 | -8.51 | 24.54 | 0.3300 | -788.0 | -712.3 | |
| 0.00 | 1.05 | 0.00 | 0.56 | 24.70 | 332.27 | -9.01 | 23.21 | 0.3625 | -709.0 | -486.3 | |
| 0.00 | 1.05 | 0.00 | 0.56 | 25.42 | 329.70 | -11.58 | 27.77 | 0.3907 | -598.0 | -458.7 | |
| 0.00 | 2.35 | 0.00 | 1.26 | 24.25 | 329.74 | -11.54 | 29.30 | 0.3742 | -863.0 | -629.6 | |
| 0.00 | 2.87 | 0.00 | 1.60 | 27.94 | 325.68 | -15.60 | 31.58 | 0.4556 | 793.0 | 662.9 | |
| 0.00 | 1.57 | 0.00 | 0.88 | 26.56 | 322.38 | -18.90 | 38.39 | 0.4684 | 776.0 | 603.3 | |
| 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. | |