Astronomical League Comet Observing Program Submittal Form


Date:  __________________________________


Name: ___James L Twellman___________


Mailing Address:  _______________________________


e-mail Address: __________________________________


Astronomical League Affiliation:  _Astronomical Society of Eastern Missouri___


List comets observed for SILVER:           


  1.   P1/Halley                                     (1986)                      
  2.  109P/Swift-Tuttle                         (1992)                          
  3.  73P/Schwassmann-Wachmann “C”                                                   
  4.  C/2006 M4 (Swan)                                                                                      
  5.  C/2006 P1 (McNaught)                                            
  6.  17P/Holmes                                                                                  
  7.  8P/Tuttle                                                     
  8.  C/2007 W1  (Boattini)                         
  9.  C/2008 A1 (McNaught)                          
  10. C/2007 N3  (Lulin)                             
  11. C/2006 W3 (Christensen)              
  12. 88P/Howell                                     

I observed other comets in addition to this list, but some I could not get (or simply did not make the effort on) a drawing, or a second chance at drawing (or movement noted), so they do not count toward this Astronomical League effort (unless a tail is seen).  My apologies on my “artwork”.  I am a “stick-figure” kind of guy when it comes to drawing.  However, I can say that I have gotten better (with respect to comets) with time.

Some personal statistics of these observations thru July 26, 2020:
# comets observed  =  38
# comets with definitive tails seen = 14  (rest were 'fuzzballs')
# comets observed either naked eye or binos = 20   (binos are an essential tool)
# comets observed by unaided eye= 7 (17P/Holmes,  C/2006 M4 Swan, + 5 below)
# comets with naked-eye tails observed = 5  (these are special:  Hyakutake, Hale-Bopp, C/2006 P1 McNaught, C/2011 L4 PanSTARRS, and C/2020 F3 Neowise)
Links frequently used for comets:


1.   C/1996 B2 (Hyakutake)         (1996)
2.  C/1995 O1 (Hale-Bopp)         (1997)   (One observation recorded, with tail)
3.  81P / Wild 2 
4.  C/2009 K5 (McNaught) 
5.  C/2009 R1 (McNaught) 
6.  103P/Hartley 2    
7.   C/2009 P1 (Garradd)
8.   168P/Hergenrother                        (one night, 2 observations, with tail)
9.   C/2012 K5 (LINEAR)                      (one night, 2 observations., with tail)
10. C/2011 L4 (PanSTARRS)
11.  C2012 F6 (Lemmon)                     (one night, 2 observations, no tail)
12.  C/2013 R1 (Lovejoy)  
13.  C/2012 S1 (ISON)
14.  C/2014 E2 (Jacques)
15.  C/2012 K1 (PanSTARRS)              (one night, 2 observations, no tail)
16.  C/2013 UQ4 (CATALINA)              (one night, 2 observations, no tail)
17.  C/2014 Q2 (Lovejoy)
18.  C/2014 S2 (PanSTARRS)

21.   C/2013 X1 PanSTARRS

Beyond A.L. requirements
23.  21P Giacobini-Zinner                    (3 observations, no tail)
24.  C2017 S3 PanSTARRS        (confirmed via  Comet disintegrated.)
25.  46P Wirtanen
26.  C/2020 F3 Neowise                           
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