SDO HMI 2014-04-18 16:00:34 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 | 18.94 | 0.00 | 9.83 | -17.15 | 200.35 | -10.42 | 144.88 | 0.2741 | -508.4 | -374.8 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 16:00:34 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 | 3.01 | 0.00 | 1.51 | -13.63 | 208.84 | -1.93 | 167.24 | 0.1488 | 673.0 | 660.8 | |
| 0.00 | 1.06 | 0.00 | 0.53 | -13.02 | 207.86 | -2.91 | 159.71 | 0.1434 | 786.0 | 601.8 | |
| 0.00 | 1.24 | 0.00 | 0.62 | -11.91 | 205.99 | -4.78 | 144.67 | 0.1416 | -847.0 | -589.8 | |
| 0.00 | 1.86 | 0.00 | 0.93 | -11.88 | 205.84 | -4.93 | 143.68 | 0.1427 | -981.0 | -799.4 | |
| 0.00 | 1.95 | 0.00 | 0.99 | -16.26 | 202.52 | -8.25 | 144.12 | 0.2362 | -902.0 | -769.2 | |
| 0.00 | 1.15 | 0.00 | 0.59 | -18.50 | 202.06 | -8.71 | 147.89 | 0.2714 | -732.0 | -608.4 | |
| 0.00 | 1.77 | 0.00 | 0.92 | -19.36 | 201.75 | -9.01 | 148.74 | 0.2862 | -907.0 | -643.5 | |
| 0.00 | 1.59 | 0.00 | 0.86 | -23.93 | 194.94 | -15.83 | 142.27 | 0.4092 | -775.0 | -589.8 | |
| 0.00 | 3.10 | 0.00 | 1.66 | -20.28 | 193.89 | -16.88 | 133.87 | 0.3794 | -733.0 | -649.2 | |
| 0.00 | 2.21 | 0.00 | 1.22 | -19.37 | 188.50 | -22.27 | 124.87 | 0.4375 | -666.0 | -486.1 | |
| 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. | |