SDO HMI 2014-08-17 22:00:38 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 |
| 31.77 | 170.13 | 34.59 | 185.27 | 8.22 | 343.35 | -63.52 | 84.20 | 0.8923 | -670.9 | -228.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-17 22:00:38 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 |
| 18.63 | 170.13 | 20.30 | 185.27 | 8.40 | 343.33 | -63.55 | 83.99 | 0.8924 | -734.9 | -228.0 | |
| 10.35 | -1.00 | 11.24 | -1.00 | 8.05 | 343.43 | -63.44 | 84.40 | 0.8918 | -648.6 | 999999 | |
| 1.53 | -1.00 | 1.67 | -1.00 | 7.57 | 343.29 | -63.59 | 84.92 | 0.8932 | -337.6 | 999999 | |
| 1.26 | -1.00 | 1.38 | -1.00 | 7.74 | 343.17 | -63.71 | 84.72 | 0.8940 | -314.5 | 999999 | |
| 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. | |