SDO HMI 2014-07-20 22:00:40 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 |
| 0.00 | 5.89 | 0.00 | 3.14 | -15.87 | 52.47 | -4.69 | 167.92 | 0.3645 | 367.5 | 310.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-20 22:00:40 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 | 1.81 | 0.00 | 0.95 | -13.06 | 55.04 | -2.11 | 173.34 | 0.3111 | 784.0 | 519.5 | |
| 0.00 | 0.54 | 0.00 | 0.28 | -11.63 | 53.03 | -4.12 | 166.05 | 0.2935 | 686.0 | 561.8 | |
| 0.00 | 2.36 | 0.00 | 1.27 | -17.95 | 52.29 | -4.87 | 168.23 | 0.3973 | 771.0 | 599.1 | |
| 0.00 | 1.18 | 0.00 | 0.64 | -17.75 | 48.75 | -8.40 | 160.06 | 0.4097 | -771.0 | -681.2 | |
| 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. | |