SDO HMI 2014-09-21 18:00:34 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 |
| 0.00 | 9.48 | 0.00 | 5.44 | -14.55 | 286.81 | -20.01 | 138.51 | 0.4939 | 721.4 | 600.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 18:00:34 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 | 1.06 | 0.00 | 0.55 | -9.33 | 299.34 | -7.48 | 155.46 | 0.3106 | 995.0 | 888.8 | |
| 0.00 | 2.30 | 0.00 | 1.27 | -13.94 | 291.16 | -15.66 | 143.52 | 0.4424 | 845.0 | 698.3 | |
| 0.00 | 1.42 | 0.00 | 0.78 | -13.50 | 290.87 | -15.95 | 142.39 | 0.4396 | 822.0 | 702.6 | |
| 0.00 | 0.80 | 0.00 | 0.51 | -22.84 | 281.42 | -25.39 | 140.98 | 0.6300 | 451.0 | 434.9 | |
| 0.00 | 1.15 | 0.00 | 0.74 | -23.19 | 280.77 | -26.05 | 140.66 | 0.6390 | 655.0 | 450.2 | |
| 0.00 | 1.33 | 0.00 | 0.76 | -9.44 | 282.19 | -24.63 | 123.61 | 0.4955 | 724.0 | 595.7 | |
| 0.00 | 1.42 | 0.00 | 0.83 | -11.84 | 280.95 | -25.86 | 126.17 | 0.5309 | 558.0 | 398.8 | |
| 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. | |