SDO HMI 2014-04-17 09:00:34 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 | 6.47 | 0.00 | 4.17 | 15.87 | 194.42 | -33.40 | 56.26 | 0.6358 | -537.8 | -463.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-17 09:00:34 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 | 1.33 | 0.00 | 0.79 | 17.20 | 203.42 | -24.40 | 46.34 | 0.5477 | -711.0 | -563.4 | |
| 0.00 | 1.59 | 0.00 | 1.02 | 14.82 | 194.13 | -33.69 | 58.34 | 0.6323 | -802.0 | -632.1 | |
| 0.00 | 1.24 | 0.00 | 0.79 | 14.83 | 193.83 | -33.99 | 58.54 | 0.6359 | -639.0 | -494.3 | |
| 0.00 | 1.51 | 0.00 | 0.98 | 15.01 | 192.92 | -34.90 | 58.94 | 0.6473 | -123.0 | -232.2 | |
| 0.00 | 0.80 | 0.00 | 0.59 | 18.70 | 186.17 | -41.65 | 58.47 | 0.7408 | -414.0 | -377.3 | |
| 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. | |