SDO HMI 2014-07-18 17:00:40 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 |
| 2.27 | 16.96 | 1.15 | 8.61 | 16.77 | 82.06 | -4.33 | 18.88 | 0.2237 | -143.2 | -85.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-18 17:00:40 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 | 3.54 | 0.00 | 1.79 | 16.55 | 83.36 | -3.03 | 13.78 | 0.2135 | -873.0 | -790.7 | |
| 0.00 | 2.27 | 0.00 | 1.15 | 16.89 | 83.10 | -3.29 | 14.49 | 0.2202 | -946.0 | -793.7 | |
| 0.00 | 1.81 | 0.00 | 0.92 | 16.61 | 81.90 | -4.49 | 19.89 | 0.2216 | -818.0 | -624.4 | |
| 0.00 | 1.63 | 0.00 | 0.83 | 17.10 | 81.69 | -4.69 | 19.91 | 0.2307 | 862.0 | 585.2 | |
| 1.18 | 7.71 | 0.60 | 3.92 | 16.70 | 81.35 | -5.04 | 21.91 | 0.2264 | 924.9 | 643.6 | |
| 1.09 | -5.00 | 0.55 | -5.00 | 16.91 | 81.19 | -5.20 | 22.17 | 0.2308 | 877.4 | 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. | |