SDO HMI 2014-04-18 20:00:34 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 | 8.95 | 0.00 | 4.60 | -16.23 | 200.63 | -7.93 | 152.41 | 0.2424 | -585.0 | -333.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 20:00:34 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 | 1.95 | 0.00 | 0.98 | -13.60 | 208.86 | 0.30 | 182.03 | 0.1447 | 873.0 | 660.0 | |
| 0.00 | 0.71 | 0.00 | 0.35 | -11.93 | 206.61 | -1.94 | 163.90 | 0.1203 | -559.0 | -455.5 | |
| 0.00 | 1.06 | 0.00 | 0.54 | -16.19 | 202.68 | -5.88 | 152.49 | 0.2140 | -828.0 | -614.3 | |
| 0.00 | 1.24 | 0.00 | 0.63 | -17.42 | 202.45 | -6.11 | 154.18 | 0.2343 | -845.0 | -621.5 | |
| 0.00 | 1.06 | 0.00 | 0.54 | -14.95 | 200.71 | -7.85 | 141.84 | 0.2146 | -858.0 | -705.5 | |
| 0.00 | 0.80 | 0.00 | 0.41 | -15.55 | 200.56 | -8.00 | 143.07 | 0.2242 | -812.0 | -462.6 | |
| 0.00 | 0.71 | 0.00 | 0.38 | -20.49 | 193.92 | -14.63 | 138.18 | 0.3564 | -812.0 | -614.9 | |
| 0.00 | 1.42 | 0.00 | 0.77 | -19.76 | 187.78 | -20.78 | 127.37 | 0.4218 | -839.0 | -638.1 | |
| 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. | |