SDO HMI 2011-02-15 11:58:57 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 | 8.39 | 0.00 | 6.18 | -20.95 | 63.40 | 47.14 | 247.78 | 0.7417 | -416.4 | -436.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-15 11:58:57 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 | 1.63 | 0.00 | 1.21 | -20.63 | 64.04 | 47.78 | 248.35 | 0.7480 | -589.0 | -507.1 | |
| 0.00 | 0.51 | 0.00 | 0.38 | -20.84 | 63.80 | 47.54 | 248.02 | 0.7458 | -582.0 | -527.5 | |
| 0.00 | 4.11 | 0.00 | 3.02 | -20.75 | 63.39 | 47.12 | 248.05 | 0.7412 | -662.0 | -566.8 | |
| 0.00 | 1.03 | 0.00 | 0.77 | -21.93 | 63.84 | 47.58 | 246.60 | 0.7485 | 383.0 | 298.9 | |
| 0.00 | 1.11 | 0.00 | 0.80 | -21.31 | 61.86 | 45.60 | 246.94 | 0.7257 | -632.0 | -498.3 | |
| 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. | |