SDO HMI 2013-09-17 23:59:04 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 |
| 18.36 | 117.01 | 41.95 | 277.96 | -17.53 | 59.10 | -74.78 | 109.75 | 0.9782 | 224.4 | 35.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-09-17 23:59:04 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 |
| 12.24 | 111.51 | 27.60 | 257.89 | -17.60 | 59.63 | -74.25 | 109.91 | 0.9767 | 562.9 | 67.4 | |
| 6.12 | -1.00 | 14.35 | -1.00 | -17.65 | 59.20 | -74.67 | 109.88 | 0.9782 | -313.7 | 999999 | |
| 0.00 | 2.75 | 0.00 | 9.96 | -16.63 | 54.25 | -79.63 | 107.96 | 0.9914 | -427.0 | -405.5 | |
| 0.00 | 1.42 | 0.00 | 4.93 | -16.15 | 54.50 | -79.37 | 107.52 | 0.9906 | -323.0 | -316.2 | |
| 0.00 | 1.33 | 0.00 | 5.18 | -16.46 | 53.80 | -80.07 | 107.72 | 0.9923 | -196.0 | -105.5 | |
| 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. | |