SDO HMI 2014-04-21 12:00:35 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 | 9.40 | 0.00 | 5.26 | -18.26 | 197.26 | 23.91 | 237.14 | 0.4594 | -482.3 | -369.9 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-21 12:00:35 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 | 0.98 | 0.00 | 0.60 | -13.23 | 209.62 | 36.27 | 254.61 | 0.5996 | 678.0 | 486.9 | |
| 0.00 | 1.15 | 0.00 | 0.67 | -17.20 | 203.62 | 30.27 | 245.30 | 0.5322 | -647.0 | -529.5 | |
| 0.00 | 1.24 | 0.00 | 0.71 | -14.80 | 202.83 | 29.48 | 249.28 | 0.5108 | -553.0 | -480.3 | |
| 0.00 | 1.77 | 0.00 | 0.99 | -22.91 | 194.51 | 21.17 | 226.85 | 0.4577 | -612.0 | -444.2 | |
| 0.00 | 1.42 | 0.00 | 0.78 | -21.98 | 192.50 | 19.15 | 225.84 | 0.4258 | -697.0 | -512.8 | |
| 0.00 | 1.24 | 0.00 | 0.67 | -18.99 | 192.05 | 18.70 | 231.07 | 0.3914 | -720.0 | -446.6 | |
| 0.00 | 1.60 | 0.00 | 0.84 | -16.13 | 190.46 | 17.11 | 235.34 | 0.3452 | -825.0 | -482.3 | |
| 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. | |