SDO HMI 2011-10-31 08:59:00 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 |
| 12.04 | 40.20 | 6.68 | 22.35 | 30.85 | 215.86 | 5.91 | 348.68 | 0.4557 | -867.2 | -469.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-10-31 08:59:00 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 |
| 4.76 | 39.16 | 2.64 | 21.75 | 30.63 | 216.22 | 6.27 | 347.97 | 0.4530 | -1170.3 | -508.0 | |
| 2.34 | -1.00 | 1.30 | -1.00 | 30.66 | 216.05 | 6.10 | 348.31 | 0.4529 | -1264.9 | 999999 | |
| 4.94 | -1.00 | 2.74 | -1.00 | 30.86 | 215.96 | 6.01 | 348.58 | 0.4557 | -951.1 | 999999 | |
| 0.00 | 1.04 | 0.00 | 0.60 | 35.26 | 208.05 | -1.90 | 3.03 | 0.5147 | 680.0 | 510.4 | |
| 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. | |