SDO HMI 2014-10-17 23:00:30 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 |
| 33.06 | 205.82 | 33.21 | 207.01 | -21.13 | 16.24 | 55.25 | 241.78 | 0.8718 | 720.0 | 216.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-17 23:00:30 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 |
| 0.00 | 0.35 | 0.00 | 0.37 | -17.64 | 19.06 | 58.07 | 246.52 | 0.8838 | 402.0 | 293.2 | |
| 0.00 | 0.70 | 0.00 | 0.69 | -17.32 | 16.94 | 55.95 | 246.18 | 0.8666 | 413.0 | 418.4 | |
| 16.31 | 203.46 | 16.52 | 204.76 | -21.26 | 16.53 | 55.54 | 241.75 | 0.8743 | 549.1 | 216.3 | |
| 16.75 | -3.00 | 16.69 | -3.00 | -21.01 | 16.00 | 55.01 | 241.82 | 0.8696 | 1020.0 | 999999 | |
| 0.00 | 0.87 | 0.00 | 0.83 | -22.36 | 13.88 | 52.89 | 239.54 | 0.8576 | 347.0 | 340.7 | |
| 0.00 | 0.44 | 0.00 | 0.36 | -24.65 | 6.18 | 45.19 | 233.43 | 0.8051 | -467.0 | -414.8 | |
| 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. | |