Monthly Preliminary Report
MPR
Kjell Inge Malde, Director/Editor Web: http://www.cv-helios.net  
Hunsteinstien 42A, N-4083 Hundvaag  NORWAY Email: cvhelios@gmail.com  
             
Volume 44 Number 12               MPR no. 509               December 2023               ISSN 2535-3780
CV-Helios Network
Monthly Preliminary Report for December 2023
Solar Cycle 25: Month no. 49
Report id.: cv2312 - CV-report no.: 509
Memno. Name Country CV Obs K Obs. Tot.
CV-001 KJELL INGE MALDE NORWAY 127,1 17 1,061 9342
CV-010 FRANKY DUBOIS BELGIUM 83,7 14 0,813 9729
CV-019 ELMAR JUNKER GERMANY 195,0 5 1,426 3862
CV-023 HARTMUT BRETSCHNEIDER GERMANY 57,2 12 0,502 5955
CV-040 ROBERTO BATTAIOLA ITALY 133,0 7 0,992 2154
CV-068 SVEN OVE THIMM DENMARK 70,8 4 0,561 4310
CV-077 ANDREW JOHNSTON UNITED KINGDOM 112,5 4 0,955 3701
CV-080 JAN JANSSENS BELGIUM 79,5 2 0,740 1230
CV-082 PIOTR URBANSKI POLAND 89,3 9 0,835 5577
CV-086 TOS POLAND POLAND 115,1 31 0,999 8783
CV-091 GRZEGORZ DALEK POLAND 93,1 14 0,824 4802
CV-102 PAULO ROBERTO MOSER BRAZIL 97,4 28 0,837 3154
CV-105 ALEXEY RYBACK RUSSIA 103,2 10 0,952 3513
CV-122 VLASTISLAV FEIK CZECH REPUBLIC 73,9 7 0,742 3210
CV-135 GEMA ARAUJO SPAIN 141,1 29 1,240 7587
CV-136 FAUSTINO GARCIA SPAIN 82,4 9 0,678 4012
CV-139 JAVIER ALONSO SPAIN 110,9 10 0,941 4176
CV-151 JEFFREY CARELS BELGIUM 74,0 4 0,784 3279
CV-171 WALTER JOSE MALUF BRAZIL 206,7 26 1,725 3073
CV-181 ADAM DERDZIKOWSKI POLAND 103,6 5 1,051 1211
CV-207 ONDREJOV OBS. (AI CAS) CZECH REPUBLIC 104,2 13 1,064 3852
CV-208 JOHAN NEYS BELGIUM 54,5 2 0,842 779
CV-214 IGOR GRAGEDA MENDEZ BOLIVIA 116,2 22 0,985 1366
CV-215 ARNAUD MENGUS FRANCE 106,6 5 0,976 371
CV-219 KANDILLI OBSERVATORY TURKEY 95,1 17 0,865 1023
CV-220 MICHEL FRANGEUL FRANCE 98,7 3 0,748 188
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
Totals Observers Days CV No K  
26 31 104,79 309 0,928  
Results
Date CV Obsrvrs Regions
 6 rot.		 CV-USAF 6-rot.
 6 rot.		 CV-6 rot. CV-13 rot.
1 134,40 10 7,49 107,37 113,14 113,79
2 122,33 6 7,46 107,16 112,66 113,73
3 122,80 10 7,45 106,96 112,24 113,66
4 144,70 10 7,41 106,93 112,15 113,60
5 112,63 8 7,38 106,96 111,95 113,45
6 137,40 10 7,35 106,97 111,96 113,33
7 148,33 9 7,34 107,13 112,22 113,26
8 114,75 8 7,33 107,10 112,22 113,16
9 127,67 6 7,33 107,11 112,28 113,16
10 108,60 10 7,34 107,07 112,42 113,14
11 70,40 15 7,35 106,93 112,36 113,04
12 88,80 10 7,34 106,61 112,35 113,07
13 87,75 8 7,35 106,25 112,17 113,10
14 117,67 9 7,36 106,12 112,00 113,13
15 107,44 9 7,37 105,93 111,88 113,10
16 107,31 13 7,40 106,36 111,94 113,09
17 63,43 14 7,40 106,32 111,62 112,96
18 108,80 10 7,40 106,29 111,40 112,96
19 142,27 11 7,40 106,23 111,34 113,00
20 159,75 12 7,38 105,99 111,26 113,02
21 182,43 7 7,36 105,42 110,95 113,05
22 174,29 7 7,35 104,81 110,55 113,07
23 118,00 9 7,32 104,21 110,12 113,01
24 148,50 8 7,32 104,08 109,96 113,02
25 147,15 13 7,30 103,72 109,69 113,11
26 112,08 12 7,31 103,45 109,45 113,12
27 94,15 13 7,32 103,21 109,03 113,03
28 106,09 11 7,30 102,38 108,53 112,93
29 78,58 12 7,29 101,70 107,60 112,80
30 66,22 9 7,26 100,70 106,99 112,62
31 76,90 10 7,24 99,66 105,91 112,54
 Totals/ 3,96 27,3 0,97 4,83 110,98 113,13
Avrgs
CV and CV observers          
 
           
CV-13 rot. per Dec 2023  
             
Latest sunspot regions developments          
Reg.,1st date,Max.dt.,Last dt.,Lat.,Long.,Rot.,Max.mvh,Class,CV Reg.,1st date,Max.dt.,Last dt.,Lat.,Long.,Rot.,Max.mvh,Class,CV
3153,01.12.22,04.12.22,14.12.22,-17,327,2265,1080,FKO,45 3167,13.12.22,14.12.22,20.12.22,20,241,2265,190,DAO,19
3155,01.12.22,04.12.22,08.12.22,22,25,2264,140,DAI,22 3169,16.12.22,27.12.22,29.12.22,21,117,2265,490,FKC,57
3156,02.12.22,03.12.22,14.12.22,25,320,2265,220,DAO,19 3171,19.12.22,23.12.22,30.12.22,24,97,2265,250,DKO,43
3157,03.12.22,10.12.22,14.12.22,16,295,2265,230,ESI,29 3176,26.12.22,31.12.22,06.01.23,19,9,2265,430,EKO,44
3158,04.12.22,05.12.22,09.12.22,24,355,2265,110,DAI,22 3177,28.12.22,31.12.22,08.01.23,-18,334,2266,310,DAC,31
3163,10.12.22,17.12.22,21.12.22,-20,215,2265,530,EKI,47 3507,29.11.23,06.12.23,10.12.23,8,222,2278,210,CSO,11
3165,11.12.22,15.12.22,17.12.22,-20,278,2265,340,EKC,56 3510,03.12.23,05.12.23,10.12.23,-15,217,2278,150,DAI,22
3166,11.12.22,19.12.22,20.12.22,-8,226,2265,180,DSO,25 3511,03.12.23,09.12.23,11.12.23,-22,215,2278,180,FSI,30
   
             
:Product: Weekly Highlights and Forecasts        
Highlights of Solar and Geomagnetic Activity  
01 - 07 January 2024 http://services.swpc.noaa.gov/text/weekly.txt
   
Solar activity was at low to moderate levels. Moderate activity Sunspot regions of December 2023  
(R1/Minor) was observed from Region 3536 (N06, L=151, class/area  
Eko/250 on 03 Jan) on 01, 02 and 04 Jan. The largest of these M 3153,01.12.22,04.12.22,14.12.22,-17,327,2265,1080,FKO,45
flares was an M4.7 observed at 01/1225 UTC. This region also 3155,01.12.22,04.12.22,08.12.22,22,25,2264,140,DAI,22
produced a total of 35 C-class flares. Region 3538 (N21, L=175, 3156,02.12.22,03.12.22,14.12.22,25,320,2265,220,DAO,19
class/area Dai/070 on 05 Jan) produced a total of 17 C-class flares, 3157,03.12.22,10.12.22,14.12.22,16,295,2265,230,ESI,29
the largest a C7.1/1n at 06/1527 UTC. C-class activity was also 3158,04.12.22,05.12.22,09.12.22,24,355,2265,110,DAI,22
produced by Regions 3534 (S13, L=225, class/area Dao/150 on 30 Dec), 3163,10.12.22,17.12.22,21.12.22,-20,215,2265,530,EKI,47
3535 (S05, L=285, class/area Bxo/010 on 28 Dec), 3537 (N18, L=153, 3165,11.12.22,15.12.22,17.12.22,-20,278,2265,340,EKC,56
class/area Dsi/120 on 05 Jan) and 3540 (S18, L=095, class/area 3166,11.12.22,19.12.22,20.12.22,-8,226,2265,180,DSO,25
Dki/350 on 06 Jan).  3167,13.12.22,14.12.22,20.12.22,20,241,2265,190,DAO,19
  3169,16.12.22,27.12.22,29.12.22,21,117,2265,490,FKC,57
Numerous CME signatures were detected during the period, but none 3171,19.12.22,23.12.22,30.12.22,24,97,2265,250,DKO,43
were determined to have an Earth-directed component.  3176,26.12.22,31.12.22,06.01.23,19,9,2265,430,EKO,44
  3177,28.12.22,31.12.22,08.01.23,-18,334,2266,310,DAC,31
  3507,29.11.23,06.12.23,10.12.23,8,222,2278,210,CSO,11
  3510,03.12.23,05.12.23,10.12.23,-15,217,2278,150,DAI,22
Solar activity is expected to be low with a chance for M-class 3511,03.12.23,09.12.23,11.12.23,-22,215,2278,180,FSI,30
(R1-R2/Minor-Moderate) flares and a slight chance for X-class  
(R3/Strong) flares from 08-24 Jan, 26-31 Jan and 01-03 Feb. Low  
activity is expected on 25 Jan.   
   
A slight chance for proton events exists at geosynchronous orbit  
through the period.           
Progress Solar Cycle no. 25          
Graphic show CV-Int. levels cycle 25 compared to same stage cycles 21-24 per end Dec 2023.
Highlights December 2023          
   
The solar activity in December 2023 have slowly come out of pause with many regions, though  
the solar activity is rising slowly and many regions have been of very modest sizes.  
   
The 6 rot. average was 105,5 CV-units by end November,  
but the 13 rot. average was 112,0 CV-units by last month end.  
Report-end this MPR 509 for December show we may still approach cycle 23, though 20% behind.  
A total of 799 regions this cycle per end January 2024 (398 regions North and 401 regions South).   
At the same time solar cycle 24 produced 617 regions .(257 north and 360 south)  
   
It now seems that prediction mix of 6 and 13 rotation averages may indicate maximum 14.08.2025 (+/- 2 rot.)  
as a time of maximum for the CV-I (though it may happen a bit earlier). Updates will come.  
   
We reckon there have passed 1512 days of the new cycle by this issue.  
   
We may see a continued production of smaller regions for a while   
but within first half year of 2024 we expect more active periods!  
   
Solar Flux onset: OCCURED 30 September 2022.  Stay tuned and observe the solar disk from now on!  
   
Please remember you are always welcome to contribute with drawings and photos!  
   
Need for new members!  Do you know any amateur solar astronomer that know or like to learn classifications?  
Then please pass the information about CV-Helios Network's work and contact cvhelios@gmail.com  
   
Supergroups-catalogue:  
CV-Helios Network is currently working on a catalogue with drawings or photos  
of the, currently 858, sunspot regions that exceeded 1000 mvh  
in the period of RGO-USAF tables, that is, from 1874 to the current year.  
Drawings or photos will be collected from the archives of wellknown different observatories!  
Hopefully this catalogue will be published 2024 or 2025!  Stay tuned!  
   
   
   
   
 
   
             
Pictures from last month - Observer contributions, etc.        
  Photo courtesy: Thanks to CV-135 Gema Araujo, Spain Highlights December 2023    
  Thank you, Gema Araujo, for giving us access to your large collection of solar images  
  Left: Photo from CV-135 Gema Araujo, Spain  
  from 21 December 2023.  
  Picture below in hmiigr from SOHO