SDO HMI 2011-04-25 00:59:06 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 |
| 1.16 | 7.38 | 0.63 | 4.06 | 16.33 | 177.40 | -15.03 | 34.87 | 0.4378 | -522.8 | -272.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-04-25 00:59:06 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 | 1.07 | 0.00 | 0.59 | 18.34 | 178.56 | -13.87 | 30.23 | 0.4540 | -669.0 | -561.0 | |
| 0.00 | 1.60 | 0.00 | 0.88 | 16.54 | 177.43 | -15.00 | 34.49 | 0.4400 | -791.0 | -659.2 | |
| 0.00 | 1.69 | 0.00 | 0.93 | 16.06 | 177.44 | -15.00 | 35.14 | 0.4338 | -908.0 | -654.9 | |
| 1.16 | 3.02 | 0.63 | 1.66 | 15.65 | 176.95 | -15.48 | 36.58 | 0.4332 | 746.7 | 573.5 | |
| 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. | |