SDO HMI 2011-12-16 20:58:55 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 |
| 15.65 | 42.28 | 8.11 | 21.93 | -17.22 | 323.00 | 5.97 | 199.71 | 0.2982 | -455.6 | -500.0 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2011-12-16 20:58:55 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 | 1.96 | 0.00 | 1.02 | -17.19 | 326.78 | 9.75 | 210.23 | 0.3229 | 926.0 | 768.0 | |
| 0.00 | 0.94 | 0.00 | 0.49 | -17.13 | 325.87 | 8.84 | 207.96 | 0.3147 | 818.0 | 608.0 | |
| 2.72 | 3.91 | 1.42 | 2.04 | -17.56 | 325.11 | 8.08 | 205.27 | 0.3154 | 1024.4 | 602.7 | |
| 1.53 | 2.30 | 0.80 | 1.20 | -18.08 | 324.61 | 7.58 | 203.18 | 0.3198 | 895.7 | 854.7 | |
| 7.48 | 8.25 | 3.86 | 4.25 | -15.57 | 323.70 | 6.67 | 204.08 | 0.2756 | -1027.7 | -791.1 | |
| 0.00 | 1.02 | 0.00 | 0.53 | -15.91 | 323.31 | 6.28 | 202.34 | 0.2782 | -564.0 | -430.7 | |
| 0.00 | 1.11 | 0.00 | 0.57 | -16.49 | 322.68 | 5.65 | 199.55 | 0.2835 | -889.0 | -764.3 | |
| 0.00 | 3.83 | 0.00 | 1.98 | -17.50 | 322.28 | 5.25 | 197.14 | 0.2974 | -854.0 | -752.7 | |
| 2.98 | 11.65 | 1.54 | 6.03 | -17.20 | 322.15 | 5.12 | 197.05 | 0.2919 | -1167.9 | -829.6 | |
| 0.94 | 4.59 | 0.49 | 2.39 | -18.27 | 321.46 | 4.43 | 193.93 | 0.3061 | -1065.5 | -880.7 | |
| 0.00 | 1.53 | 0.00 | 0.80 | -18.71 | 321.32 | 4.28 | 193.15 | 0.3125 | -718.0 | -571.3 | |
| 0.00 | 1.19 | 0.00 | 0.63 | -21.08 | 318.50 | 1.47 | 184.00 | 0.3445 | -877.0 | -619.1 | |
| 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. | |