SDO HMI 2014-09-17 08:00:35 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 |
| 16.07 | 37.39 | 15.67 | 36.59 | -21.14 | 311.72 | -53.39 | 119.72 | 0.8638 | -119.8 | -139.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-09-17 08:00:35 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 |
| 4.80 | 6.93 | 4.39 | 6.34 | -20.92 | 314.32 | -50.79 | 120.60 | 0.8429 | 581.1 | 347.5 | |
| 0.00 | 1.15 | 0.00 | 1.08 | -20.69 | 313.29 | -51.82 | 119.89 | 0.8503 | 298.0 | 177.5 | |
| 0.53 | 2.13 | 0.50 | 1.99 | -20.36 | 313.24 | -51.87 | 119.51 | 0.8495 | 378.7 | 289.5 | |
| 0.00 | 1.60 | 0.00 | 1.53 | -21.04 | 312.54 | -52.57 | 119.94 | 0.8574 | -274.0 | -231.1 | |
| 0.00 | 1.15 | 0.00 | 1.10 | -20.58 | 312.45 | -52.66 | 119.41 | 0.8565 | 221.0 | 203.4 | |
| 5.33 | 22.83 | 5.33 | 22.93 | -21.47 | 311.00 | -54.11 | 119.77 | 0.8705 | -548.3 | -313.0 | |
| 4.97 | -6.00 | 5.00 | -6.00 | -21.18 | 310.61 | -54.51 | 119.29 | 0.8725 | -518.3 | 999999 | |
| 0.44 | 1.60 | 0.45 | 1.62 | -20.98 | 310.21 | -54.91 | 118.93 | 0.8749 | -224.8 | -123.1 | |
| 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. | |