SDO HMI 2014-09-23 01:00:34 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 |
| 8.05 | 38.67 | 16.38 | 83.67 | 15.55 | 7.90 | 78.15 | 284.39 | 0.9740 | 178.6 | 42.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-23 01:00:34 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 | 4.51 | 0.00 | 12.44 | 15.58 | 10.99 | 81.23 | 284.64 | 0.9847 | -148.0 | -190.6 | |
| 0.00 | 1.50 | 0.00 | 3.58 | 15.60 | 9.28 | 79.53 | 284.53 | 0.9793 | -200.0 | -270.6 | |
| 0.00 | 2.30 | 0.00 | 5.82 | 16.71 | 10.03 | 80.28 | 285.71 | 0.9815 | -204.0 | -177.7 | |
| 2.21 | 30.36 | 4.50 | 61.83 | 15.17 | 7.09 | 77.34 | 283.94 | 0.9714 | 417.8 | 158.9 | |
| 5.84 | -4.00 | 11.88 | -4.00 | 15.53 | 6.96 | 77.21 | 284.31 | 0.9707 | 179.5 | 999999 | |
| 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. | |