SDO HMI 2013-10-18 07:59:00 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 |
| 8.02 | 46.67 | 10.14 | 57.79 | -22.45 | 155.01 | 61.38 | 242.36 | 0.9154 | 388.8 | 42.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-10-18 07:59:00 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 |
| 7.15 | 38.21 | 9.26 | 49.75 | -22.49 | 156.42 | 62.79 | 242.82 | 0.9254 | 571.2 | 56.9 | |
| 0.00 | 1.05 | 0.00 | 1.18 | -24.00 | 151.66 | 58.03 | 239.75 | 0.8990 | 416.0 | 456.5 | |
| 0.00 | 0.52 | 0.00 | 0.56 | -22.84 | 150.68 | 57.05 | 240.63 | 0.8893 | 334.0 | 287.3 | |
| 0.87 | 2.18 | 0.88 | 2.21 | -21.38 | 149.14 | 55.51 | 241.64 | 0.8742 | 563.8 | 484.5 | |
| 0.00 | 3.49 | 0.00 | 3.03 | -22.00 | 142.59 | 48.96 | 238.28 | 0.8244 | -471.0 | -374.6 | |
| 0.00 | 1.22 | 0.00 | 1.06 | -22.15 | 142.32 | 48.69 | 237.99 | 0.8226 | -567.0 | -450.2 | |
| 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. | |