SDO HMI 2014-03-18 16:00:30 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 |
| 1.91 | 12.35 | 1.14 | 7.32 | 11.43 | 287.30 | 27.52 | 303.87 | 0.5479 | -341.9 | -372.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-18 16:00:30 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 |
| 1.91 | 4.52 | 1.14 | 2.70 | 10.73 | 288.62 | 28.84 | 301.54 | 0.5582 | -797.4 | -690.7 | |
| 0.00 | 1.48 | 0.00 | 0.87 | 9.68 | 287.31 | 27.53 | 301.09 | 0.5342 | 825.0 | 682.9 | |
| 0.00 | 0.96 | 0.00 | 0.57 | 12.48 | 287.40 | 27.62 | 305.35 | 0.5571 | -703.0 | -626.2 | |
| 0.00 | 0.78 | 0.00 | 0.46 | 12.19 | 286.23 | 26.45 | 306.10 | 0.5410 | -773.0 | -690.0 | |
| 0.00 | 2.44 | 0.00 | 1.44 | 12.66 | 286.22 | 26.43 | 306.83 | 0.5448 | -755.0 | -674.1 | |
| 0.00 | 1.13 | 0.00 | 0.67 | 12.38 | 286.18 | 26.40 | 306.43 | 0.5420 | -837.0 | -724.6 | |
| 0.00 | 1.04 | 0.00 | 0.61 | 11.51 | 285.96 | 26.17 | 305.34 | 0.5320 | 711.0 | 515.9 | |
| 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. | |