SDO HMI 2014-09-04 03:00:36 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 |
| 21.90 | 147.98 | 44.47 | 298.80 | -19.31 | 107.29 | -72.23 | 112.06 | 0.9708 | 454.9 | 219.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-04 03:00:36 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 |
| 0.27 | 136.88 | 0.55 | 271.84 | -20.28 | 107.39 | -72.13 | 113.07 | 0.9714 | 586.7 | 256.3 | |
| 11.62 | -1.00 | 23.59 | -1.00 | -19.82 | 107.39 | -72.13 | 112.60 | 0.9710 | 540.5 | 999999 | |
| 5.45 | -1.00 | 10.48 | -1.00 | -18.60 | 107.98 | -71.54 | 111.50 | 0.9674 | 795.1 | 999999 | |
| 2.59 | -1.00 | 5.18 | -1.00 | -19.05 | 107.50 | -72.01 | 111.85 | 0.9698 | 398.0 | 999999 | |
| 0.00 | 1.88 | 0.00 | 4.27 | -20.24 | 105.88 | -73.64 | 112.70 | 0.9768 | -220.0 | -210.9 | |
| 1.97 | 5.01 | 4.67 | 11.93 | -18.75 | 104.91 | -74.61 | 111.01 | 0.9789 | -328.5 | -271.4 | |
| 0.00 | 0.63 | 0.00 | 1.54 | -19.10 | 104.45 | -75.06 | 111.27 | 0.9806 | -79.0 | -81.7 | |
| 0.00 | 3.58 | 0.00 | 9.22 | -16.72 | 103.48 | -76.03 | 108.70 | 0.9821 | -39.0 | -83.7 | |
| 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. | |