SDO HMI 2013-09-18 15:59:04 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 |
| 32.00 | 184.22 | 45.62 | 264.10 | -17.58 | 59.08 | -66.00 | 111.78 | 0.9392 | 448.0 | 91.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2013-09-18 15:59:04 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 |
| 27.48 | 177.04 | 38.72 | 251.23 | -17.61 | 59.41 | -65.67 | 111.89 | 0.9375 | 642.3 | 108.1 | |
| 3.72 | -1.00 | 5.40 | -1.00 | -17.63 | 58.69 | -66.40 | 111.73 | 0.9415 | -198.9 | 999999 | |
| 0.00 | 1.24 | 0.00 | 1.93 | -18.08 | 57.36 | -67.73 | 111.85 | 0.9492 | -380.0 | -307.4 | |
| 0.00 | 0.71 | 0.00 | 1.16 | -18.48 | 56.51 | -68.58 | 112.04 | 0.9539 | -270.0 | -249.6 | |
| 0.00 | 0.62 | 0.00 | 1.19 | -17.53 | 53.30 | -71.78 | 110.35 | 0.9672 | -240.0 | -215.4 | |
| 0.00 | 1.06 | 0.00 | 1.90 | -16.20 | 54.23 | -70.86 | 109.20 | 0.9619 | -434.0 | -375.6 | |
| 0.80 | 3.55 | 1.50 | 6.69 | -16.53 | 53.34 | -71.75 | 109.34 | 0.9661 | -159.3 | -90.4 | |
| 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. | |