SDO HMI 2014-04-17 21:00:34 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 |
| 24.88 | 166.96 | 17.60 | 116.96 | 11.87 | 262.82 | 41.61 | 293.04 | 0.7071 | -564.1 | -283.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-17 21:00:34 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 |
| 1.42 | 157.04 | 1.00 | 111.15 | 11.63 | 263.71 | 42.50 | 292.10 | 0.7165 | -853.4 | -337.1 | |
| 13.81 | -1.00 | 9.80 | -1.00 | 11.98 | 263.73 | 42.53 | 292.55 | 0.7183 | -873.2 | 999999 | |
| 9.65 | -1.00 | 6.80 | -1.00 | 11.61 | 263.41 | 42.20 | 292.22 | 0.7131 | -1163.2 | 999999 | |
| 0.00 | 1.42 | 0.00 | 0.89 | 12.45 | 255.27 | 34.06 | 298.00 | 0.6217 | 495.0 | 507.3 | |
| 0.00 | 1.15 | 0.00 | 0.72 | 12.41 | 255.12 | 33.91 | 298.05 | 0.6196 | 673.0 | 555.5 | |
| 0.00 | 3.72 | 0.00 | 2.13 | 12.91 | 245.55 | 24.34 | 307.31 | 0.5072 | 587.0 | 554.7 | |
| 0.00 | 1.06 | 0.00 | 0.61 | 12.89 | 245.04 | 23.83 | 307.86 | 0.5009 | 573.0 | 637.3 | |
| 0.00 | 1.77 | 0.00 | 1.01 | 13.06 | 244.42 | 23.21 | 308.86 | 0.4950 | 868.0 | 665.2 | |
| 0.00 | 0.80 | 0.00 | 0.45 | 13.51 | 242.93 | 21.72 | 311.45 | 0.4819 | 813.0 | 667.1 | |
| 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. | |