Comets

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:

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

10-18, 2024:

# comets observed = 44

# comets observed by unaided eye= 8 (17P/Holmes, C/2006 M4 Swan, + 6 below)

# Naked-Eye comets with tails observed = 5 (these are VERY special: Hyakutake, Hale-Bopp, C/2006 P1 McNaught, C/2011 L4 PanSTARRS, C/2020 F3 Neowise, and C/2023 A3 Tsuchinshan-Atlas). Several "comets with tails, but not seen naked-eye".

Links frequently used for comets:

http://cometchasing.skyhound.com/ (this is the FIRST stop)

http://www.aerith.net/comet/future-n.html

http://www.astroleague.org/al/obsclubs/comet/comet.htm (observation forms)

www.calsky.com (to identify lesser stars in the field of view)

http://theskylive.com/comets

For GOLD: (Needed 18 + 12 = 30)

13. C/1996 B2 (Hyakutake) (1996)

14. C/1995 O1 (Hale-Bopp) (1997) (One observation recorded, with tail)

15. 81P / Wild 2

16. C/2009 K5 (McNaught)

17. C/2009 R1 (McNaught)

18. 103P/Hartley 2

19. C/2009 P1 (Garradd)

20. 168P/Hergenrother (one night, 2 observations, with tail)

21. C/2012 K5 (LINEAR) (one night, 2 observations., with tail)

22. C/2011 L4 (PanSTARRS)

23. C2012 F6 (Lemmon) (one night, 2 observations, no tail)

24. C/2013 R1 (Lovejoy)

25. C/2012 S1 (ISON)

26. C/2014 E2 (Jacques)

27. C/2012 K1 (PanSTARRS) (one night, 2 observations, no tail)

28. C/2013 UQ4 (CATALINA) (one night, 2 observations, no tail)

29. C/2014 Q2 (Lovejoy)

30. C/2014 S2 (PanSTARRS)

...Beyond A.L. requirements....

31. C/2013 US10 (Catalina)

32. 252P LINEAR

33. C/2013 X1 PanSTARRS

34. 45P-Honda-Mrkos-Pajdusakova

35. 21P Giacobini-Zinner (3 observations, no tail)

36. C2017 S3 PanSTARRS (confirmed FOV via www.TheSkyLive.com - Comet soon disintegrated.)

37. 46P Wirtanen

38. C/2020 F3 Neowise

39. C/2021 A1 Leonard

40. C/2022 E3 ZTF

41. C/2023 H2 Lemmon

42. 12P Pons-Brooks

43. 13P / Olbers

44. C/2023 A3 Tsuchinshan-ATLAS

45. C/2025 A6 (Lemmon)

46. C/2025 R2 (SWAN)

47. C/2025 K1 (Atlas)

48. 3i ATLAS

49. 24P Schaumasse

50. C/2025 E1 (Weirzchos)

51. C/2025 R3 (PanSTARRS)

52.