SDO HMI 2014-07-30 16:00:40 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 |
| 15.75 | 51.98 | 11.29 | 37.34 | -20.62 | 249.22 | -38.97 | 125.65 | 0.7267 | 801.6 | 376.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-30 16:00:40 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 | 1.72 | 0.00 | 1.26 | -22.88 | 249.31 | -38.89 | 128.35 | 0.7398 | 517.0 | 387.5 | |
| 8.78 | 46.63 | 6.30 | 33.39 | -20.56 | 249.38 | -38.81 | 125.68 | 0.7248 | 897.2 | 374.5 | |
| 4.62 | -2.00 | 3.30 | -2.00 | -20.36 | 249.40 | -38.79 | 125.45 | 0.7233 | 1052.2 | 999999 | |
| 2.35 | -2.00 | 1.69 | -2.00 | -20.38 | 249.10 | -39.09 | 125.28 | 0.7264 | 667.8 | 999999 | |
| 0.00 | 1.00 | 0.00 | 0.75 | -22.55 | 247.57 | -40.62 | 126.85 | 0.7537 | 438.0 | 327.8 | |
| 0.00 | 1.45 | 0.00 | 1.09 | -22.42 | 247.44 | -40.75 | 126.63 | 0.7542 | 580.0 | 445.8 | |
| 0.00 | 1.18 | 0.00 | 0.85 | -19.18 | 247.99 | -40.20 | 123.14 | 0.7304 | 468.0 | 353.1 | |
| 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. | |