SDO HMI 2011-01-04 07:58:55 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 |
| 56.34 | 374.62 | 36.82 | 245.12 | 31.25 | 188.95 | -22.52 | 30.13 | 0.6548 | -1174.0 | -360.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-01-04 07:58:55 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 | 0.76 | 0.00 | 0.52 | 34.80 | 188.80 | -22.68 | 27.26 | 0.6935 | 584.0 | 527.6 | |
| 56.34 | 369.70 | 36.82 | 241.86 | 31.25 | 188.96 | -22.51 | 30.12 | 0.6547 | -1278.7 | -364.8 | |
| 0.00 | 1.53 | 0.00 | 1.07 | 35.26 | 187.16 | -24.31 | 28.46 | 0.7077 | 570.0 | 394.4 | |
| 0.00 | 2.63 | 0.00 | 1.67 | 28.28 | 188.17 | -23.30 | 33.80 | 0.6287 | -820.0 | -648.0 | |
| 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. | |