SDO HMI 2014-04-20 00:00:34 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 | 15.00 | 0.00 | 8.76 | -19.86 | 164.72 | -28.42 | 120.04 | 0.5264 | -589.8 | -486.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 00:00:34 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 | 1.60 | 0.00 | 0.94 | -27.81 | 168.52 | -24.62 | 136.71 | 0.5396 | -728.0 | -617.5 | |
| 0.00 | 2.75 | 0.00 | 1.57 | -24.52 | 169.07 | -24.07 | 132.30 | 0.5037 | -617.0 | -557.7 | |
| 0.00 | 0.89 | 0.00 | 0.50 | -18.43 | 167.83 | -25.31 | 120.26 | 0.4715 | -748.0 | -543.4 | |
| 0.00 | 2.93 | 0.00 | 1.60 | -10.89 | 168.45 | -24.68 | 104.59 | 0.4256 | -170.0 | -213.3 | |
| 0.00 | 1.51 | 0.00 | 0.85 | -17.98 | 166.84 | -26.30 | 118.60 | 0.4819 | -715.0 | -508.5 | |
| 0.00 | 1.77 | 0.00 | 1.07 | -21.51 | 161.71 | -31.43 | 121.11 | 0.5688 | -747.0 | -595.1 | |
| 0.00 | 0.62 | 0.00 | 0.36 | -9.70 | 160.79 | -32.35 | 99.89 | 0.5375 | -534.0 | -485.6 | |
| 0.00 | 0.89 | 0.00 | 0.59 | -27.75 | 155.74 | -37.40 | 126.63 | 0.6721 | -711.0 | -561.0 | |
| 0.00 | 0.62 | 0.00 | 0.39 | -21.91 | 157.06 | -36.07 | 119.04 | 0.6271 | -461.0 | -501.4 | |
| 0.00 | 0.44 | 0.00 | 0.27 | -15.36 | 158.65 | -34.49 | 109.31 | 0.5808 | -442.0 | -407.6 | |
| 0.00 | 0.98 | 0.00 | 0.62 | -19.05 | 156.34 | -36.80 | 114.33 | 0.6236 | -615.0 | -505.0 | |
| 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. | |