UT
Largest cycle 25 spot at this point
2019.12.25: Solar cycle 25 is well underway. The major part of new active regions are currently of cycle 25 origin. This list will likely not be maintained from January 2020.
| Date | Time UT |
Location | Classification @ 4K | N spots @ 1K | Image (4K res.) | Comments | |
|---|---|---|---|---|---|---|---|
| 20191223 | 23:45 | N26W14 | BXO | 1 |
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| 20191223 | 16:15 | S29E60 | CRO | 3 |
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| 20191218 | 19:00 | N22E75 | HRX | 1 |
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| 20191217 | 07:00 | S21E18 | BXO | 3 |
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probably cycle 25 | |
| 20191211 | 12:00 | N17W01 | AXX | 1 |
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| 20191206 | 06:00 | N24W25 | CRO | 2 |
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| 20191124 | 23:45 | S23W01 | BXO | 1 |
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| 20191112 | 23:45 | N33W25 | BXO | 1 |
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| 20191112 | 12:00 | S22E77 | BXO | 2 |
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| 20191110 | 02:00 | N23W34 | AXX | 1 |
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| 20191031 | 12:00 | S27E43 | BXO | 2 |
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| 20191011 | 23:45 | S20W35 | BXO | 1 |
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| 20191005 | 12:00 | N19W15 | AXX | 1 |
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| 20190925 | 04:00 | S27E34 | AXX | 1 |
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| 20190920 | 23:45 | S13W01 | AXX | 2 |
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| 20190913 | 23:45 | N34E11 | BXO | 2 |
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| 20190910 | 23:45 | N28W65 | AXX | 1 |
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| 20190708 | 23:45 | S21E12 | BXO | 2 |
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| 20190708 | 22:30 | S28E12 | BXO | 2 |
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| 20190706 | 23:45 | S27E50 | CRO | 2 |
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| 20190630 | 23:45 | S20W03 | CRO | 4 |
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| 20190630 | 21:00 | N28W41 | AXX | 1 |
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| 20190611 | 23:45 | S21W33 | AXX | 1 |
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| 20190610 | 21:00 | N32E18 | BXO | 2 |
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| 20190523 | 12:00 | N19W20 | AXX | 1 |
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| 20190503 | 23:45 | N28E05 | CRO | 2 |
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| 20190502 | 10:00 | N27W13 | AXX | 1 |
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| 20190501 | 06:00 | N36W32 | BXO | 3 |
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| 20190430 | 11:00 | N31W11 | AXX | 1 |
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| 20190331 | 14:15 | S26W12 | AXX | 1 |
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| 20190331 | 00:30 | N38W09 | AXX | 1 |
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| 20190330 | 12:00 | N28W44 | AXX | 1 |
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| 20190328 | 15:30 | S31E33 | BXO | 2 |
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| 20190309 | 23:45 | S27E19 | AXX | 1 |
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| 20190307 | 12:00 | N38W08 | AXX | 1 |
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| 20190220 | 23:45 | S34E02 | AXX | 1 |
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| 20190217 | 13:00 | S18E17 | AXX | 1 |
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| 20190213 | 23:45 | N15E02 | AXX | 1 |
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| 20190212 | 21:00 | S16W48 | CRO | 2 |
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| 20190211 | 18:00 | S24W02 | CRO | 4 |
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| 20190206 | 04:00 |
N30E19 | AXX | 1 |
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| 20181227 | 03:00 |
N45W04 | AXX | 1 |
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| 20181216 | 03:00 |
S20E40 |
AXX | 1 |
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| 20181117 | 20:00 |
N27E11 |
BXO | 2 |
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| 20181108 | 12:00 |
N26W18 |
HRX | 1 |
|
Largest cycle 25 spot at this point |
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| 20181009 | 11:30 |
S29W10 |
AXX | 1 |
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| 20181009 | 11:30 |
S49E29 |
AXX | 1 |
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| 20180531 | 12:00 |
S29W51 |
BXO |
2 |
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| 20180409 | 12:00 |
S31E09 |
CRO |
2 |
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| 20180219 | 09:30 | N53W18 | AXX | 1 | |
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| 20180126 | 21:00 | S37W07 | AXX | 1 | |
negative polarity spot not visible at 1K | |
| 20170910 | 12:00 | N36E09 | BXO | 2 | |
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| 20170828 | 12:00 | N43W13 | AXX | 2 | |
negative polarity spot too small |
While smaller spots with the correct polarity alignment of cycle 25 regions have been observed at high latitude locations as early as 2016, this overview will only include spots large enough to have been visible at a 1K resolution. In the case of reversed polarity cycle 24 regions, those that are not at a sufficiently high latitude (ie. 30 degrees or more), are considered most likely to belong to cycle 24 and will not be included in this list until closer to the actual solar cycle minimum (likely to be sometime between January 2019 and July 2019).