SDO HMI 2011-12-17 23:58:55 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 |
| 0.00 | 10.05 | 0.00 | 5.65 | -19.85 | 323.47 | 21.27 | 226.80 | 0.4720 | -328.7 | -144.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-17 23:58:55 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 | 1.62 | 0.00 | 0.91 | -17.38 | 325.61 | 23.41 | 233.55 | 0.4733 | 856.0 | 701.7 | |
| 0.00 | 2.38 | 0.00 | 1.33 | -17.36 | 324.73 | 22.53 | 232.62 | 0.4622 | 651.0 | 428.5 | |
| 0.00 | 0.94 | 0.00 | 0.54 | -22.73 | 324.32 | 22.12 | 223.33 | 0.5081 | -762.0 | -563.7 | |
| 0.00 | 1.62 | 0.00 | 0.93 | -22.44 | 324.27 | 22.07 | 223.70 | 0.5047 | -699.0 | -559.1 | |
| 0.00 | 0.94 | 0.00 | 0.53 | -23.25 | 323.16 | 20.96 | 221.14 | 0.5017 | -767.0 | -597.8 | |
| 0.00 | 1.36 | 0.00 | 0.75 | -18.00 | 321.53 | 19.33 | 227.37 | 0.4296 | -889.0 | -724.6 | |
| 0.00 | 1.19 | 0.00 | 0.66 | -21.63 | 318.59 | 16.39 | 216.89 | 0.4388 | -691.0 | -517.9 | |
| 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. | |