SDO HMI 2014-04-30 15:00:36 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 |
| 17.74 | 82.91 | 18.91 | 87.79 | -23.11 | 114.15 | 61.36 | 246.02 | 0.8853 | 394.2 | 169.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-30 15:00:36 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 |
| 2.76 | 7.49 | 2.96 | 8.06 | -21.99 | 114.74 | 61.95 | 247.36 | 0.8886 | -206.2 | 208.1 | |
| 14.98 | 68.02 | 15.95 | 72.56 | -23.24 | 114.39 | 61.60 | 245.91 | 0.8873 | 728.8 | 208.3 | |
| 0.00 | 1.78 | 0.00 | 1.79 | -21.76 | 112.68 | 59.89 | 247.34 | 0.8726 | -73.0 | -98.3 | |
| 0.00 | 0.45 | 0.00 | 0.44 | -21.92 | 112.27 | 59.48 | 247.10 | 0.8695 | -208.0 | -246.2 | |
| 0.00 | 1.52 | 0.00 | 1.53 | -22.90 | 112.64 | 59.85 | 246.04 | 0.8736 | 419.0 | 391.9 | |
| 0.00 | 0.62 | 0.00 | 0.61 | -22.08 | 111.80 | 59.01 | 246.85 | 0.8660 | -247.0 | -250.1 | |
| 0.00 | 0.80 | 0.00 | 0.75 | -22.20 | 109.66 | 56.87 | 246.35 | 0.8485 | -499.0 | -404.3 | |
| 0.00 | 2.23 | 0.00 | 2.05 | -25.13 | 108.53 | 55.75 | 242.71 | 0.8441 | -587.0 | -508.0 | |
| 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. | |