SDO HMI 2014-04-20 12:00:34 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 | 13.05 | 0.00 | 7.02 | 16.56 | 186.10 | -0.46 | 0.35 | 0.3840 | 114.6 | 100.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 12:00:34 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 | 0.89 | 0.00 | 0.51 | 21.48 | 200.08 | 13.53 | 333.99 | 0.4984 | -649.0 | -490.0 | |
| 0.00 | 0.98 | 0.00 | 0.52 | 15.24 | 194.28 | 7.73 | 339.54 | 0.3728 | -720.0 | -541.9 | |
| 0.00 | 0.80 | 0.00 | 0.44 | 20.77 | 188.84 | 2.29 | 355.12 | 0.4407 | -623.0 | -519.8 | |
| 0.00 | 1.86 | 0.00 | 0.97 | 12.93 | 188.15 | 1.60 | 354.99 | 0.3131 | 744.0 | 559.1 | |
| 0.00 | 1.51 | 0.00 | 0.78 | 10.38 | 186.97 | 0.42 | 358.46 | 0.2693 | 749.0 | 618.5 | |
| 0.00 | 1.06 | 0.00 | 0.55 | 12.65 | 186.52 | -0.04 | 0.12 | 0.3072 | 898.0 | 675.6 | |
| 0.00 | 0.98 | 0.00 | 0.51 | 13.53 | 186.46 | -0.10 | 0.30 | 0.3220 | 662.0 | 539.8 | |
| 0.00 | 2.84 | 0.00 | 1.54 | 18.71 | 185.44 | -1.11 | 2.60 | 0.4069 | -804.0 | -636.8 | |
| 0.00 | 2.13 | 0.00 | 1.20 | 20.79 | 173.86 | -12.70 | 25.26 | 0.4835 | 774.0 | 639.4 | |
| 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. | |