SDO HMI 2014-07-18 22:00:40 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 |
| 25.31 | 48.26 | 14.14 | 27.11 | 6.69 | 111.76 | 28.15 | 275.46 | 0.4725 | 538.2 | 17.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-18 22:00:40 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 | 4.54 | 0.00 | 2.62 | 7.34 | 114.54 | 30.92 | 276.49 | 0.5150 | -850.0 | -722.0 | |
| 0.00 | 0.54 | 0.00 | 0.31 | 5.61 | 114.20 | 30.59 | 273.13 | 0.5092 | -656.0 | -626.0 | |
| 0.64 | 4.99 | 0.36 | 2.84 | 6.79 | 113.11 | 29.49 | 275.53 | 0.4931 | -971.7 | -795.1 | |
| 0.00 | 1.09 | 0.00 | 0.62 | 6.40 | 112.94 | 29.33 | 274.75 | 0.4904 | -822.0 | -692.9 | |
| 0.00 | 1.09 | 0.00 | 0.61 | 6.62 | 111.98 | 28.36 | 275.29 | 0.4758 | 438.0 | 381.9 | |
| 5.08 | 36.01 | 2.85 | 20.11 | 6.33 | 111.54 | 27.92 | 274.71 | 0.4689 | 858.8 | 707.0 | |
| 11.88 | -6.00 | 6.63 | -6.00 | 6.56 | 111.07 | 27.45 | 275.25 | 0.4618 | 1035.1 | 999999 | |
| 7.71 | -6.00 | 4.30 | -6.00 | 6.90 | 110.95 | 27.34 | 276.00 | 0.4603 | 977.4 | 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. | |