SDO HMI 2014-02-21 23:00:27 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 |
| 28.77 | 138.10 | 72.00 | 334.02 | -1.52 | 147.24 | -78.06 | 90.06 | 0.9776 | 26.0 | 0.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-02-21 23:00:27 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 |
| 8.59 | 80.61 | 16.30 | 157.35 | -2.34 | 150.30 | -75.01 | 90.52 | 0.9664 | -541.1 | -159.4 | |
| 4.98 | -1.00 | 9.85 | -1.00 | -2.57 | 149.66 | -75.64 | 90.82 | 0.9690 | -292.2 | 999999 | |
| 2.23 | 7.99 | 4.83 | 17.36 | -2.53 | 148.39 | -76.91 | 90.94 | 0.9743 | 0.8 | 106.8 | |
| 1.20 | -3.00 | 2.60 | -3.00 | -2.80 | 148.34 | -76.97 | 91.22 | 0.9743 | -141.1 | 999999 | |
| 0.00 | 4.81 | 0.00 | 10.53 | -3.10 | 148.13 | -77.18 | 91.55 | 0.9750 | 49.0 | 75.8 | |
| 0.00 | 0.60 | 0.00 | 1.86 | -1.40 | 144.49 | -80.81 | 90.26 | 0.9876 | 241.0 | 276.3 | |
| 3.52 | 44.09 | 11.45 | 146.92 | 0.01 | 144.22 | -81.09 | 88.88 | 0.9888 | 363.7 | 172.6 | |
| 8.25 | -7.00 | 26.97 | -7.00 | -0.44 | 144.00 | -81.30 | 89.36 | 0.9892 | 353.3 | 999999 | |
| 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. | |