SDO HMI 2014-09-23 18:00:34 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 | 6.35 | 0.00 | 3.45 | 16.33 | 257.87 | -22.55 | 65.07 | 0.4073 | 736.6 | 598.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-23 18:00:34 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 | 1.50 | 0.00 | 0.81 | 16.89 | 259.39 | -21.03 | 62.43 | 0.3890 | 702.0 | 597.6 | |
| 0.00 | 1.41 | 0.00 | 0.76 | 15.15 | 258.81 | -21.61 | 67.13 | 0.3874 | 663.0 | 524.4 | |
| 0.00 | 1.41 | 0.00 | 0.76 | 15.76 | 258.07 | -22.35 | 66.26 | 0.4015 | 909.0 | 709.3 | |
| 0.00 | 1.06 | 0.00 | 0.58 | 16.45 | 257.75 | -22.67 | 64.91 | 0.4098 | 802.0 | 637.8 | |
| 0.00 | 0.97 | 0.00 | 0.54 | 17.84 | 254.13 | -26.29 | 64.63 | 0.4685 | 607.0 | 503.5 | |
| 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. | |