SDO HMI 2014-04-18 02:00:34 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 | 5.41 | 0.00 | 3.35 | 13.72 | 186.86 | -31.58 | 58.45 | 0.6027 | 165.8 | 224.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 02:00:34 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 | 0.71 | 0.00 | 0.44 | 20.72 | 191.91 | -26.53 | 44.12 | 0.6024 | -591.0 | -506.2 | |
| 0.00 | 1.06 | 0.00 | 0.65 | 11.61 | 186.64 | -31.81 | 61.65 | 0.5888 | 809.0 | 670.2 | |
| 0.00 | 0.80 | 0.00 | 0.52 | 18.80 | 185.32 | -33.12 | 52.61 | 0.6534 | -602.0 | -519.0 | |
| 0.00 | 1.95 | 0.00 | 1.20 | 11.48 | 186.26 | -32.19 | 62.14 | 0.5927 | 571.0 | 419.0 | |
| 0.00 | 0.89 | 0.00 | 0.54 | 10.65 | 185.85 | -32.60 | 63.69 | 0.5928 | 642.0 | 565.5 | |
| 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. | |