SDO HMI 2014-07-29 21:00:40 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 | 6.71 | 0.00 | 4.44 | 8.46 | 257.25 | -41.40 | 83.04 | 0.6614 | 339.7 | 304.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-29 21:00:40 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 | 1.09 | 0.00 | 0.63 | 14.62 | 267.93 | -30.72 | 71.02 | 0.5248 | -733.0 | -559.6 | |
| 0.00 | 1.09 | 0.00 | 0.72 | 10.20 | 257.08 | -41.57 | 80.92 | 0.6636 | 596.0 | 514.8 | |
| 0.00 | 0.91 | 0.00 | 0.60 | 9.97 | 256.70 | -41.95 | 81.30 | 0.6683 | 613.0 | 505.2 | |
| 0.00 | 0.72 | 0.00 | 0.50 | 10.71 | 254.49 | -44.16 | 80.37 | 0.6966 | 576.0 | 536.8 | |
| 0.00 | 2.63 | 0.00 | 1.80 | 4.89 | 254.83 | -43.82 | 88.78 | 0.6924 | 420.0 | 364.9 | |
| 0.00 | 0.27 | 0.00 | 0.19 | 4.64 | 254.34 | -44.32 | 89.10 | 0.6987 | 566.0 | 576.3 | |
| 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. | |