SDO HMI 2011-02-27 23:58:58 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 |
| 9.22 | 16.38 | 5.35 | 9.63 | -22.08 | 181.48 | -30.13 | 120.37 | 0.5410 | 214.0 | -251.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-02-27 23:58:58 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 |
| 9.22 | 11.20 | 5.35 | 6.49 | -21.59 | 182.75 | -28.86 | 120.36 | 0.5223 | 916.5 | 655.3 | |
| 0.00 | 1.21 | 0.00 | 0.72 | -22.03 | 180.24 | -31.37 | 119.47 | 0.5565 | -653.0 | -478.6 | |
| 0.00 | 1.81 | 0.00 | 1.09 | -23.74 | 179.34 | -32.28 | 121.73 | 0.5770 | -682.0 | -594.0 | |
| 0.00 | 1.21 | 0.00 | 0.74 | -24.23 | 178.69 | -32.92 | 122.12 | 0.5874 | -853.0 | -702.1 | |
| 0.00 | 0.95 | 0.00 | 0.59 | -21.71 | 176.45 | -35.16 | 116.93 | 0.6023 | -714.0 | -541.7 | |
| 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. | |