SDO HMI 2014-10-17 18:00:30 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 |
| 37.76 | 234.18 | 35.41 | 219.90 | -21.16 | 16.31 | 52.55 | 240.71 | 0.8510 | 850.7 | 208.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-17 18:00:30 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 | 0.87 | 0.00 | 0.84 | -17.55 | 18.97 | 55.21 | 245.68 | 0.8613 | 418.0 | 366.0 | |
| 19.10 | 230.44 | 18.06 | 216.56 | -21.23 | 16.63 | 52.87 | 240.76 | 0.8538 | 716.0 | 210.5 | |
| 18.14 | -2.00 | 16.88 | -2.00 | -21.05 | 16.06 | 52.30 | 240.73 | 0.8487 | 1184.0 | 999999 | |
| 0.52 | 1.22 | 0.47 | 1.10 | -22.20 | 14.00 | 50.24 | 238.59 | 0.8362 | 504.8 | 423.9 | |
| 0.00 | 0.87 | 0.00 | 0.78 | -22.23 | 13.51 | 49.75 | 238.34 | 0.8322 | -97.0 | -65.6 | |
| 0.00 | 0.78 | 0.00 | 0.62 | -27.76 | 4.03 | 40.28 | 227.16 | 0.7824 | -454.0 | -395.9 | |
| 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. | |