SDO HMI 2011-08-18 16:59:09 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 |
| 2.61 | 33.03 | 1.46 | 18.46 | -18.34 | 113.63 | 11.31 | 203.70 | 0.4639 | -237.9 | -386.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-08-18 16:59:09 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 | 1.53 | 0.00 | 0.87 | -18.74 | 117.46 | 15.14 | 210.09 | 0.4954 | 582.0 | 457.2 | |
| 0.00 | 1.62 | 0.00 | 0.92 | -19.02 | 116.76 | 14.44 | 208.64 | 0.4938 | 910.0 | 743.8 | |
| 0.00 | 1.71 | 0.00 | 0.97 | -18.40 | 116.18 | 13.86 | 208.30 | 0.4814 | 845.0 | 709.5 | |
| 0.00 | 1.53 | 0.00 | 0.86 | -17.86 | 114.89 | 12.57 | 206.57 | 0.4650 | 726.0 | 419.1 | |
| 0.00 | 1.62 | 0.00 | 0.90 | -17.67 | 113.83 | 11.51 | 204.80 | 0.4552 | -772.0 | -661.2 | |
| 2.61 | 13.41 | 1.46 | 7.50 | -18.73 | 113.51 | 11.19 | 203.22 | 0.4682 | -959.0 | -759.7 | |
| 0.00 | 1.08 | 0.00 | 0.61 | -19.03 | 113.50 | 11.18 | 202.93 | 0.4724 | -555.0 | -397.2 | |
| 0.00 | 1.08 | 0.00 | 0.60 | -16.92 | 113.30 | 10.98 | 204.50 | 0.4413 | 763.0 | 694.8 | |
| 0.00 | 2.61 | 0.00 | 1.45 | -17.75 | 113.32 | 11.00 | 203.74 | 0.4532 | -1125.0 | -804.2 | |
| 0.00 | 0.81 | 0.00 | 0.45 | -18.95 | 113.10 | 10.78 | 202.27 | 0.4689 | -779.0 | -621.3 | |
| 0.00 | 2.97 | 0.00 | 1.64 | -17.51 | 111.49 | 9.17 | 200.35 | 0.4390 | -898.0 | -713.9 | |
| 0.00 | 1.08 | 0.00 | 0.60 | -17.90 | 110.93 | 8.61 | 198.90 | 0.4418 | -787.0 | -623.2 | |
| 0.00 | 1.98 | 0.00 | 1.09 | -18.10 | 110.88 | 8.56 | 198.64 | 0.4445 | -712.0 | -638.8 | |
| 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. | |