SDO HMI 2014-09-21 13:00:34 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 9.12 | 32.15 | 9.54 | 33.63 | -15.21 | 251.40 | -58.17 | 111.53 | 0.8827 | 397.3 | 253.4 | |
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back to the solar disc SDO HMI 2014-09-21 13:00:34 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 |
| 4.69 | 29.58 | 4.82 | 30.35 | -15.34 | 252.10 | -57.47 | 111.87 | 0.8781 | 639.4 | 315.2 | |
| 3.81 | -1.00 | 3.92 | -1.00 | -15.13 | 251.96 | -57.61 | 111.60 | 0.8786 | 474.5 | 999999 | |
| 0.00 | 0.53 | 0.00 | 0.64 | -13.73 | 246.73 | -62.84 | 108.55 | 0.9134 | -503.0 | -396.7 | |
| 0.62 | 2.04 | 0.80 | 2.64 | -15.17 | 245.26 | -64.31 | 109.69 | 0.9254 | -314.1 | -247.6 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
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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. |
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| Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
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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. |
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| 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. | |