SDO HMI 2014-04-18 17:00:34 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 |
| 0.00 | 7.18 | 0.00 | 5.39 | -18.28 | 162.93 | -47.29 | 110.60 | 0.7523 | -226.0 | -258.4 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 17:00:34 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 |
| 0.00 | 0.62 | 0.00 | 0.39 | -36.79 | 186.20 | -24.02 | 148.33 | 0.6231 | 522.0 | 512.3 | |
| 0.00 | 1.86 | 0.00 | 1.42 | -19.41 | 161.45 | -48.76 | 111.07 | 0.7623 | -365.0 | -406.0 | |
| 0.00 | 0.62 | 0.00 | 0.48 | -19.97 | 160.93 | -49.29 | 111.68 | 0.7689 | -476.0 | -407.3 | |
| 0.00 | 2.30 | 0.00 | 1.72 | -15.55 | 161.89 | -48.33 | 106.08 | 0.7512 | -46.0 | -107.5 | |
| 0.00 | 0.89 | 0.00 | 0.69 | -19.25 | 160.54 | -49.68 | 110.67 | 0.7716 | -358.0 | -375.1 | |
| 0.00 | 0.89 | 0.00 | 0.69 | -10.15 | 159.18 | -51.04 | 98.76 | 0.7767 | -633.0 | -548.4 | |
| 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. | |