Twellman's comet pages

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


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)


19. C/2013 US10 (Catalina)

20. 252P LINEAR

21. C/2013 X1 PanSTARRS

22. 45P-Honda-Mrkos-Pajdusakova

Beyond A.L. requirements

23. 21P Giacobini-Zinner (3 observations, no tail)

24. C2017 S3 PanSTARRS (confirmed via Comet disintegrated.)

25. 46P Wirtanen

I observed other comets in addition to this list, but some I could not get (or simply did not make the effort on) 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 June 6, 2016:

# comets observed = 37

# comets with definitive tails seen = 13 (rest were 'fuzzballs')

# comets observed either naked eye or binos = 19 (binos are an essential tool)

# comets observed by unaided eye= 6 (17P/Holmes, C/2006 M4 Swan, + 4 below)

# comets with naked-eye tails observed = 4 (these are special: Hyakutake, Hale-Bopp, C/2006 P1 McNaught, and C/2011 L4 PanSTARRS)

Links frequently used for comets: (this is the FIRST stop) (observation forms) (to identify lesser stars in the field of view)