SDO HMI 2014-09-04 17:00:36 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 | 6.25 | 0.00 | 3.51 | -20.62 | 167.74 | -4.09 | 171.86 | 0.4737 | 578.5 | 493.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-04 17:00:36 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 | 0.45 | 0.00 | 0.25 | -22.17 | 170.60 | -1.23 | 177.68 | 0.4932 | 591.0 | 506.4 | |
| 0.00 | 0.89 | 0.00 | 0.49 | -18.92 | 169.60 | -2.22 | 175.24 | 0.4440 | 696.0 | 564.6 | |
| 0.00 | 2.32 | 0.00 | 1.29 | -19.17 | 167.20 | -4.63 | 170.26 | 0.4526 | 936.0 | 726.7 | |
| 0.00 | 2.59 | 0.00 | 1.48 | -22.19 | 167.10 | -4.73 | 171.16 | 0.4986 | 91.0 | 265.3 | |
| 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. | |