| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 5.75 | 0.00 | 3.22 | -20.45 | 311.15 | 0.48 | 181.14 | 0.4644 | -267.5 | -246.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 11:00:34 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 | 1.06 | 0.00 | 0.59 | -18.76 | 312.83 | 2.17 | 184.70 | 0.4388 | 681.0 | 513.9 | |
| 0.00 | 1.06 | 0.00 | 0.58 | -18.52 | 312.67 | 2.00 | 184.39 | 0.4349 | 834.0 | 603.1 | |
| 0.00 | 0.89 | 0.00 | 0.50 | -20.88 | 311.44 | 0.77 | 181.54 | 0.4707 | -896.0 | -822.0 | |
| 0.00 | 1.06 | 0.00 | 0.60 | -21.56 | 310.51 | -0.16 | 179.69 | 0.4811 | -845.0 | -737.7 | |
| 0.00 | 1.06 | 0.00 | 0.60 | -21.36 | 309.54 | -1.13 | 177.79 | 0.4783 | -742.0 | -690.7 | |
| 0.00 | 0.62 | 0.00 | 0.35 | -22.43 | 309.27 | -1.40 | 177.37 | 0.4948 | -637.0 | -510.6 | |
| 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. | |