SDO HMI 2011-11-18 19:58:57 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 |
| 1.46 | 18.29 | 0.77 | 9.73 | 7.79 | 347.53 | 20.95 | 285.11 | 0.3685 | 39.0 | 137.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-11-18 19:58:57 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 | 1.12 | 0.00 | 0.61 | 8.09 | 351.35 | 24.76 | 283.80 | 0.4289 | -796.0 | -585.0 | |
| 0.00 | 2.57 | 0.00 | 1.40 | 8.16 | 350.27 | 23.69 | 284.51 | 0.4125 | -962.0 | -744.2 | |
| 0.00 | 3.17 | 0.00 | 1.69 | 7.70 | 347.33 | 20.75 | 285.01 | 0.3651 | 984.0 | 803.9 | |
| 0.00 | 2.32 | 0.00 | 1.23 | 8.15 | 347.20 | 20.61 | 286.30 | 0.3647 | 762.0 | 625.0 | |
| 0.00 | 1.12 | 0.00 | 0.59 | 9.32 | 347.10 | 20.52 | 289.43 | 0.3684 | -813.0 | -611.2 | |
| 0.00 | 1.29 | 0.00 | 0.68 | 6.85 | 346.94 | 20.36 | 282.91 | 0.3559 | -918.0 | -757.5 | |
| 1.46 | 3.78 | 0.77 | 2.00 | 7.92 | 346.96 | 20.38 | 285.82 | 0.3601 | 842.9 | 452.7 | |
| 0.00 | 1.12 | 0.00 | 0.59 | 7.54 | 346.56 | 19.98 | 285.04 | 0.3523 | 599.0 | 404.2 | |
| 0.00 | 1.80 | 0.00 | 0.94 | 6.32 | 344.30 | 17.72 | 282.91 | 0.3117 | 837.0 | 630.0 | |
| 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. | |