SDO HMI 2014-10-18 14:00:30 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 |
| 24.94 | 165.86 | 32.20 | 214.14 | -21.19 | 15.89 | 63.12 | 244.25 | 0.9249 | 554.1 | 116.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-18 14:00:30 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 | 1.66 | 0.00 | 2.30 | -21.22 | 17.81 | 65.04 | 244.74 | 0.9360 | -154.0 | -162.4 | |
| 24.94 | 161.24 | 32.20 | 208.63 | -21.15 | 15.97 | 63.20 | 244.32 | 0.9253 | 636.1 | 124.9 | |
| 0.00 | 0.61 | 0.00 | 0.72 | -21.24 | 13.36 | 60.59 | 243.47 | 0.9092 | 428.0 | 448.0 | |
| 0.00 | 1.74 | 0.00 | 1.85 | -24.02 | 8.96 | 56.19 | 239.07 | 0.8867 | -325.0 | -285.8 | |
| 0.00 | 0.61 | 0.00 | 0.64 | -27.03 | 6.83 | 54.06 | 235.09 | 0.8814 | -370.0 | -319.7 | |
| 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. | |