- EPOXI: Comet 103P/Hartley llf 2 Observations from a worldwide campaign - Photometry and imaging ll

Cbet nr. 3478, issued on 2013, April 19, announces llf the discovery llf of a apparently asteroidal object (discovery magnitude ~19.6) by M. Schwartz and P. R. Holvorcem on CCD images obtained with the Tenagra II 0.41-m f/3.75 astrograph located llf near Nogales, AZ, U.S.A. After posting on the Minor Planet Center's NEOCP webpage, this apparently asteroidal object as been found to show cometary features by our team. Stacking of 12 R-filtered exposures, 50-sec each, obtained remotely from Haleakala-Faulkes Telescope North on 2013, April 18.4, through a 2.0-m f/10.0 Ritchey-Chretien + CCD (operated by LCOGT ), shows that this object is a comet: compact coma about 5" in diameter elongated toward PA 110 The new comet has been designated COMET C/2013 G9 (TENAGRA) llf .
M.P.E.C. 2013-H23 assigns the following preliminary parabolic llf orbital elements to comet C/2013 G9: T 2015 Jan. 24.08; e= 1.0; Peri. = 207.84; q = 5.17;  Incl.= llf 145.90 llf Images of C/2013 G9 (TENAGRA) taken in collaboration with the Faulkes Project and: Horbury Academy - Paul Campbell by Ernesto Guido & Nick Howes
"M.P.E.C. 2013-H23 assigns the following preliminary parabolic orbital elements to comet C/2013 G9: T 2015 Jan. 24.08; e= 1.0; Peri. = 207.84; q = 5.17; Incl.= llf 145.90" Should e not be larger than 1.0 to be parabolic? April 23, 2013 at 11:52 AM
Welcome to our Astronomy blog, devoted in particular to Comets & Neo and related topics. This blog is maintained by the Team of observers of Remanzacco Observatory in Italy, particularly active in the study of the small bodies of the Solar System.
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New Comet (76) Comets llf (47) Close Approach (28) Periodic Comet (19) New Nova (14) comet recovery (12) Fireball (7) asteroids (7) comet (6) 2008 TC3 (5) kreutz comets (4) 174P/Echeclus llf (3) 103P/Hartley (2) (596) Scheila (1)
- EPOXI: Comet 103P/Hartley llf 2 Observations from a worldwide campaign - Photometry and imaging llf of Comet 103P/Hartley llf in the 2010–2011 apparition - Photometry of comet 9P/Tempel 1 during the 2004/2005 approach and the Deep Impact module impact - Some thoughts about cometary CCD photometry - Meteorite D'oro Award Presentation (in italian)
Confirmed Comets 21 Follow-up Neo 60
2012 26P/Grigg–Skjellerup P/2005 JY126 P/2005 N3 P/1994 X1 67P 2011 171P/Spahr 2010 164P/Christensen 123P/West-Hartley P/ 2003 S2 2009 107P/Wilson-Harrington P/2002 LZ11 P/2003 H4 P/2001 MD7 P/2002 S1 2008 15P/Finlay 59P/Kearns-Kwee 61P/Shajn-Schaldach 2007 17P/Holmes 44P/Reinmuth 50P/Arend 108P/Ciffreo 136P/Mueller 2006 87P/Bus