SDO HMI 2014-10-18 02:00:30 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 |
| 34.91 | 195.58 | 36.63 | 205.56 | -21.13 | 16.15 | 56.81 | 242.33 | 0.8833 | 716.5 | 193.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-10-18 02:00:30 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 | 2.97 | 0.00 | 3.26 | -17.53 | 18.90 | 59.55 | 247.10 | 0.8943 | 29.0 | 127.9 | |
| 18.50 | 191.04 | 19.57 | 200.86 | -21.24 | 16.40 | 57.06 | 242.31 | 0.8853 | 541.5 | 199.1 | |
| 16.41 | -2.00 | 17.06 | -2.00 | -20.97 | 15.95 | 56.60 | 242.44 | 0.8813 | 1027.3 | 999999 | |
| 0.00 | 1.57 | 0.00 | 1.44 | -32.19 | 4.69 | 45.35 | 225.64 | 0.8442 | -474.0 | -348.6 | |
| 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. | |