SDO HMI 2014-02-21 15:00:27 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 |
| 12.38 | 62.13 | 36.07 | 228.79 | -1.69 | 147.44 | -82.27 | 90.74 | 0.9901 | -181.2 | 90.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-02-21 15:00:27 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 |
| 9.20 | 41.34 | 24.66 | 114.15 | -2.41 | 150.14 | -79.58 | 91.14 | 0.9837 | -312.2 | -127.2 | |
| 2.49 | -1.00 | 7.30 | -1.00 | -2.57 | 149.21 | -80.50 | 91.41 | 0.9864 | -77.9 | 999999 | |
| 0.00 | 3.61 | 0.00 | 11.97 | -2.63 | 148.00 | -81.71 | 91.62 | 0.9896 | 57.0 | 64.5 | |
| 0.00 | 1.80 | 0.00 | 6.14 | -2.38 | 147.87 | -81.85 | 91.37 | 0.9900 | 48.0 | 103.1 | |
| 0.69 | 15.38 | 4.11 | 96.53 | -0.63 | 144.41 | -85.30 | 90.05 | 0.9970 | 307.2 | 285.9 | |
| 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. | |