SDO HMI 2014-09-21 16:00:34 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!)
| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 8.94 | 0.00 | 5.00 | 7.34 | 335.35 | 27.43 | 271.88 | 0.4580 | -137.2 | -132.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-21 16:00:34 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 | 0.89 | 0.00 | 0.54 | 11.10 | 343.37 | 35.45 | 279.26 | 0.5789 | -422.0 | -452.1 | |
| 0.00 | 1.06 | 0.00 | 0.62 | 2.76 | 340.33 | 32.41 | 264.04 | 0.5403 | -693.0 | -465.4 | |
| 0.00 | 0.97 | 0.00 | 0.57 | 9.12 | 340.07 | 32.15 | 275.92 | 0.5303 | -556.0 | -462.2 | |
| 0.00 | 1.06 | 0.00 | 0.61 | 8.77 | 338.93 | 31.01 | 275.29 | 0.5133 | -742.0 | -616.9 | |
| 0.00 | 1.33 | 0.00 | 0.76 | 8.63 | 338.74 | 30.82 | 275.02 | 0.5105 | -861.0 | -708.9 | |
| 0.00 | 1.06 | 0.00 | 0.56 | 7.21 | 328.76 | 20.84 | 271.71 | 0.3546 | 807.0 | 689.7 | |
| 0.00 | 0.89 | 0.00 | 0.46 | 3.16 | 326.95 | 19.03 | 259.32 | 0.3327 | 654.0 | 513.0 | |
| 0.00 | 1.68 | 0.00 | 0.88 | 7.29 | 327.05 | 19.13 | 271.86 | 0.3267 | 715.0 | 482.5 | |
| 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. | |