SDO HMI 2014-08-18 20:00:38 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 |
| 21.06 | 101.94 | 24.97 | 121.73 | -9.56 | 331.12 | -63.64 | 103.78 | 0.9115 | 446.7 | 137.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-08-18 20:00:38 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 |
| 16.20 | 94.47 | 19.04 | 112.14 | -9.52 | 331.51 | -63.25 | 103.82 | 0.9087 | 634.1 | 150.1 | |
| 0.00 | 1.44 | 0.00 | 1.81 | -11.24 | 330.15 | -64.62 | 105.35 | 0.9206 | 395.0 | 319.9 | |
| 3.51 | -1.00 | 4.26 | -1.00 | -9.42 | 330.64 | -64.13 | 103.53 | 0.9147 | 328.0 | 999999 | |
| 0.00 | 0.99 | 0.00 | 1.27 | -11.30 | 329.61 | -65.16 | 105.29 | 0.9242 | -354.0 | -338.9 | |
| 1.35 | -1.00 | 1.67 | -1.00 | -9.45 | 330.12 | -64.64 | 103.44 | 0.9182 | 103.3 | 999999 | |
| 0.00 | 0.81 | 0.00 | 1.06 | -11.19 | 329.13 | -65.64 | 105.07 | 0.9271 | -140.0 | -143.1 | |
| 0.00 | 1.62 | 0.00 | 2.03 | -8.87 | 329.67 | -65.10 | 102.73 | 0.9204 | 482.0 | 280.6 | |
| 0.00 | 1.35 | 0.00 | 1.73 | -9.30 | 329.14 | -65.63 | 103.08 | 0.9244 | 273.0 | 165.5 | |
| 0.00 | 1.26 | 0.00 | 1.69 | -10.79 | 328.46 | -66.31 | 104.50 | 0.9307 | -465.0 | -351.2 | |
| 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. | |