SDO HMI 2014-03-04 18:00:28 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 | 7.61 | 0.00 | 4.89 | 19.73 | 112.78 | 29.60 | 313.26 | 0.6406 | -246.5 | -319.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-04 18:00:28 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 | 1.64 | 0.00 | 1.11 | 22.58 | 114.52 | 31.35 | 315.00 | 0.6817 | -539.0 | -464.0 | |
| 0.00 | 2.42 | 0.00 | 1.54 | 18.51 | 113.05 | 29.88 | 311.54 | 0.6334 | -643.0 | -533.7 | |
| 0.00 | 2.25 | 0.00 | 1.46 | 20.89 | 112.93 | 29.75 | 314.52 | 0.6526 | -401.0 | -403.7 | |
| 0.00 | 1.30 | 0.00 | 0.78 | 15.94 | 109.48 | 26.30 | 311.81 | 0.5739 | 597.0 | 467.1 | |
| 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. | |