SDO HMI 2014-04-21 22:00:35 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 |
| 0.89 | 11.00 | 0.61 | 7.49 | -19.45 | 125.89 | -41.94 | 113.19 | 0.6875 | 146.7 | 149.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-21 22:00:35 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 | 1.95 | 0.00 | 1.24 | -18.69 | 130.32 | -37.51 | 113.68 | 0.6320 | 23.0 | 80.5 | |
| 0.00 | 1.15 | 0.00 | 0.80 | -21.12 | 125.34 | -42.49 | 115.32 | 0.6994 | 673.0 | 485.9 | |
| 0.00 | 1.33 | 0.00 | 0.91 | -19.71 | 125.60 | -42.23 | 113.45 | 0.6920 | 718.0 | 624.4 | |
| 0.89 | 2.40 | 0.61 | 1.64 | -19.21 | 125.55 | -42.28 | 112.72 | 0.6911 | 711.3 | 553.4 | |
| 0.00 | 1.60 | 0.00 | 1.10 | -19.74 | 125.02 | -42.80 | 113.30 | 0.6987 | 476.0 | 348.1 | |
| 0.00 | 1.15 | 0.00 | 0.80 | -17.68 | 124.59 | -43.24 | 110.29 | 0.6982 | -718.0 | -558.2 | |
| 0.00 | 1.42 | 0.00 | 1.00 | -20.29 | 123.63 | -44.19 | 113.63 | 0.7160 | -636.0 | -532.9 | |
| 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. | |