SDO HMI 2014-04-25 16:00:35 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 |
| 44.27 | 257.83 | 35.94 | 209.01 | 18.14 | 166.08 | 47.77 | 297.27 | 0.7940 | -799.2 | -256.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-25 16:00:35 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 |
| 32.45 | 251.96 | 26.33 | 204.49 | 17.99 | 166.18 | 47.87 | 297.05 | 0.7943 | -998.5 | -270.7 | |
| 11.82 | -1.00 | 9.61 | -1.00 | 18.54 | 166.04 | 47.74 | 297.75 | 0.7951 | -943.1 | 999999 | |
| 0.00 | 0.89 | 0.00 | 0.72 | 19.52 | 165.47 | 47.16 | 299.15 | 0.7937 | -411.0 | -386.1 | |
| 0.00 | 1.24 | 0.00 | 0.96 | 17.34 | 164.05 | 45.74 | 297.23 | 0.7711 | 360.0 | 232.4 | |
| 0.00 | 1.16 | 0.00 | 0.88 | 17.82 | 162.85 | 44.55 | 298.38 | 0.7613 | 401.0 | 399.8 | |
| 0.00 | 1.60 | 0.00 | 1.22 | 18.33 | 162.70 | 44.40 | 299.07 | 0.7621 | 602.0 | 483.4 | |
| 0.00 | 0.27 | 0.00 | 0.20 | 20.22 | 161.92 | 43.62 | 301.73 | 0.7634 | 432.0 | 430.0 | |
| 0.00 | 0.71 | 0.00 | 0.54 | 19.68 | 161.69 | 43.39 | 301.21 | 0.7585 | 449.0 | 374.8 | |
| 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. | |