SDO HMI 2011-04-28 22:59:06 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 | 7.76 | 0.00 | 4.62 | 11.48 | 110.86 | -29.83 | 61.46 | 0.5594 | -655.4 | -572.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-04-28 22:59:06 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 | 0.89 | 0.00 | 0.51 | 14.28 | 116.50 | -24.19 | 51.64 | 0.5084 | -632.0 | -529.3 | |
| 0.00 | 1.25 | 0.00 | 0.73 | 13.61 | 113.12 | -27.57 | 56.20 | 0.5434 | -719.0 | -521.7 | |
| 0.00 | 1.07 | 0.00 | 0.64 | 14.73 | 112.76 | -27.93 | 54.80 | 0.5565 | -688.0 | -544.6 | |
| 0.00 | 0.45 | 0.00 | 0.26 | 5.06 | 110.68 | -30.01 | 72.76 | 0.5237 | -380.0 | -478.0 | |
| 0.00 | 1.69 | 0.00 | 1.02 | 12.78 | 109.92 | -30.77 | 60.23 | 0.5768 | -687.0 | -616.7 | |
| 0.00 | 1.34 | 0.00 | 0.78 | 5.32 | 109.64 | -31.05 | 72.87 | 0.5395 | -751.0 | -613.7 | |
| 0.00 | 1.07 | 0.00 | 0.68 | 11.63 | 105.28 | -35.40 | 65.16 | 0.6276 | -731.0 | -610.8 | |
| 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. | |