SDO HMI 2014-09-17 04:00:35 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 |
| 12.08 | 27.71 | 12.40 | 28.66 | -21.06 | 311.80 | -55.50 | 118.79 | 0.8793 | -95.3 | -205.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-17 04:00:35 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 |
| 4.26 | 7.28 | 4.14 | 7.07 | -20.86 | 314.09 | -53.22 | 119.49 | 0.8618 | 532.5 | 320.2 | |
| 1.07 | 2.13 | 1.06 | 2.12 | -20.35 | 312.87 | -54.43 | 118.45 | 0.8694 | 287.3 | 198.6 | |
| 0.00 | 1.07 | 0.00 | 1.11 | -20.92 | 311.66 | -55.65 | 118.58 | 0.8801 | -274.0 | -228.9 | |
| 0.00 | 1.15 | 0.00 | 1.20 | -20.81 | 311.43 | -55.88 | 118.38 | 0.8814 | -322.0 | -290.1 | |
| 2.84 | 5.51 | 3.02 | 5.85 | -21.42 | 311.01 | -56.29 | 118.87 | 0.8862 | -540.7 | -427.3 | |
| 3.91 | 10.57 | 4.18 | 11.31 | -21.16 | 310.64 | -56.67 | 118.45 | 0.8881 | -395.4 | -377.0 | |
| 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. | |