| List of Solar Active Regions (Sunspot Groups) - 2018 | Back to previous page |
| Northern hemisphere - 2018 | |||||||||||
| Group No. | NOAA A.R. |
Position | Obs. dates |
Type | Max. Sunspots |
Max. size (°) | Initial Obs. date |
Evolved Obs. date |
Last Obs. date |
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| Lng. | Lat. | E-W | N-S | ||||||||
| N816 | #2693 | 330 | 20 | 1 | A | 1 | 1 | 1 | Jan 6 | Jan 6 | |
| N817 | #2700 | 331 | 4 | 1 | A | 0 | 1 | 1 | Mar 3 | Mar 3 | |
| N818 | #2704 | 36 | 12 | 2 | A | 0 | 1 | 1 | Apr 21 | Apr 21 | Apr 22 |
| N819 | #2706 | 279 | 3 | 3 | D | 11 | 9 | 3 | Apr 21 | Apr 22 | Apr 29 |
| N820 | #2709 | 35 | 5 | 1 | A | 0 | 1 | 1 | May 19 | May 19 | |
| N821 | #2710 | 223 | 17 | 2 | A | 0 | 1 | 1 | May 27 | May 27 | Jun 2 |
| N822 | #2711 | 290 | 5 | 1 | A | 2 | 3 | 2 | May 27 | May 27 | |
| N823 | #2712 | 177 | 14 | 2 | C | 13 | 9 | 4 | May 27 | Jun 2 | Jun 2 |
| N824 | #2713 | 287 | 6 | 2 | B | 4 | 5 | 2 | Jun 17 | Jun 24 | Jun 24 |
| N825 | #2715 | 230 | 8 | 1 | D | 12 | 5 | 2 | Jun 24 | Jun 24 | |
| N826 | N/A | 298 | 5 | 1 | A | 0 | 1 | 1 | Jul 14 | Jul 14 | |
| N827 | #2716 | 200 | 16 | 1 | A | 0 | 1 | 1 | Jul 22 | Jul 22 | |
| N828 | #2720 | 135 | 8 | 1 | D | 13 | 7 | 2 | Aug 25 | Aug 25 | |
| N829 | #2721 | 285 | 10 | 1 | A | 0 | 1 | 1 | Sep 9 | Sep 9 | |
| N830 | #2727 | 110 | 1 | 3 | B | 6 | 4 | 1 | Nov 15 | Nov 17 | Nov 17 |
| N831 | #2728 | 338 | 5 | 3 | A | 6 | 4 | 3 | Nov 25 | Nov 25 | Nov 28 |
| N832 | #2730 | 96 | 8 | 2 | A | 0 | 1 | 1 | Dec 14 | Dec 14 | Dec 15 |
| N833 | #2731 | 24 | 12 | 2 | A | 3 | 1 | 1 | Dec 15 | Dec 15 | Dec 19 |
| Southern hemisphere - 2018 | |||||||||||
| Group No. | NOAA A.R. |
Position | Obs. dates |
Type | Max. Sunspots |
Max. size (°) | Initial Obs. date |
Evolved Obs. date |
Last Obs. date |
||
| Lng. | Lat. | E-W | N-S | ||||||||
| S774 | #2694 | 242 | -33 | 1 | A | 0 | 1 | 1 | Jan 13 | Jan 13 | |
| S775 | #2695 | 263 | -7 | 1 | A | 0 | 1 | 1 | Jan 13 | Jan 13 | |
| S776 | #2696 | 126 | -13 | 1 | A | 0 | 1 | 1 | Jan 21 | Jan 21 | |
| S777 | #2597 | 262 | -9 | 1 | A | 0 | 1 | 1 | Feb 4 | Feb 4 | |
| S778 | #2598 | 197 | -3 | 1 | A | 0 | 1 | 1 | Feb 4 | Feb 4 | |
| S779 | #2699 | 166 | -7 | 1 | D | 18 | 9 | 4 | Feb 10 | Feb 10 | |
| S780 | #2701 | 101 | -13 | 1 | A | 0 | 1 | 1 | Mar 17 | Mar 17 | |
| S781 | #2703 | 193 | -11 | 2 | A | 0 | 1 | 1 | Mar 31 | Apr 8 | Apr 8 |
| S782 | #2707 | 292 | -10 | 2 | A | 1 | 1 | 1 | Apr 22 | Apr 22 | Apr 29 |
| S783 | #2708 | 99 | -10 | 1 | C | 3 | 5 | 1 | May 5 | May 5 | |
| S784 | #2717 | 23 | -7 | 1 | A | 0 | 1 | 1 | Aug 4 | Aug 4 | |
| S785 | #2718 | 191 | -7 | 1 | A | 1 | 1 | 1 | Aug 17 | Aug 17 | |
| S786 | #2719 | 132 | -6 | 1 | B | 6 | 5 | 1 | Aug 25 | Aug 25 | |
| S787 | #2722 | 217 | -9 | 1 | A | 0 | 1 | 1 | Sep 16 | Sep 16 | |
| S788 | #2724 | 125 | -8 | 1 | A | 0 | 1 | 1 | Oct 21 | Oct 21 | |
| S789 | #2725 | 107 | -10 | 1 | A | 0 | 1 | 1 | Oct 21 | Oct 21 | |
| S790 | #2729 | 231 | -7 | 1 | A | 0 | 1 | 1 | Dec 9 | Dec 9 | |
| S791 | N/A | 237 | -5 | 2 | A | 0 | 1 | 1 | Dec 28 | Dec 29 | Dec 29 |
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