SDO HMI 2014-07-20 23:00:40 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 | 6.17 | 0.00 | 3.29 | -15.95 | 51.85 | -4.75 | 167.39 | 0.3672 | 454.6 | 211.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-20 23:00:40 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 | 1.09 | 0.00 | 0.59 | -18.53 | 56.16 | -0.44 | 178.94 | 0.3987 | 720.0 | 571.5 | |
| 0.00 | 0.91 | 0.00 | 0.47 | -11.88 | 53.03 | -3.57 | 168.06 | 0.2956 | 801.0 | 654.3 | |
| 0.00 | 1.54 | 0.00 | 0.82 | -15.39 | 51.84 | -4.76 | 166.96 | 0.3565 | 802.0 | 580.9 | |
| 0.00 | 0.82 | 0.00 | 0.43 | -13.87 | 51.62 | -4.98 | 165.28 | 0.3332 | 812.0 | 676.3 | |
| 0.00 | 1.81 | 0.00 | 0.98 | -17.74 | 48.81 | -7.79 | 161.40 | 0.4064 | -862.0 | -725.0 | |
| 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. | |