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C/2013 A1 LARSON SEKANINA FILTER

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REAL RATE PRODUCTION OBSERVED WATER IN COMET C/2012 S1 ISON

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Measuring volatiles abundances , D/H ratios , and spin temperatures in comet C/2012 S1 ISON

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This image of spectrum of instrument NIRSPEC KECK TELESCOPE , from comet C/2012 S1 ISON , date 25/10/2013 , Waveblue 2,13 microns , Wavered 4.23 microns , belongs from program '' Measuring volatiles abundances , D/H ratios , and spin temperatures in comet C/2012 S1 ISON '' , below project and research , COMETARY INVESTIGATION ASTROPHYSIC GROUP FB . CREDIT : "This research has made use of the Keck Observatory Archive (KOA), which is operated by the W. M. Keck Observatory and the NASA Exoplanet Science Institute (NExScI), under contract with the National Aeronautics and Space Administration." Please also acknowledge the PI(s) of datasets that have been obtained through KOA. The Keck Observatory Archive (KOA) is a collaboration between the NASA Exoplanet Science Institute (NExScI) and the W. M. Keck Observatory (WMKO). NExScI is sponsored by NASA's Origins Theme and Exoplanet Exploration Program, and operated by the California Institute of Technology in c…

SCIENTIFIC RESULTS OF THE COMET C/2012 S1 ISON THE HUBBLE SPACE TELESCOPE

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Within the framework of cooperation of the draft study and research of comet C/2012 S1 ISON the astrophysicist, and member of the Investigation Cometary FB Astrophysic Jian-Yang Li | Planetary Science Institute, has published some scientific results of astronomical research comet C / 2012 S1 ISON : 1.- The dust coma is mostly composed of sub-µm-sized particles emitted at speeds of tens of meters per second. 2.- The A(θ)fρ, a quantity to measure the dust production rate, is 1339 and 1239 cm in the F606W and F438W filters, respectively, in apertures <1.6″ in radius. 3.- The dust colors are slightly redder than solar, with a slope of 5.0±0.2% per 100 nm, and increase to >10% per 100 nm 10,000 km down the tail. The color properties of ISON’s coma is similar to that of Comet Hale-Bopp. A sunward jet is about 1.6″ long, at a position angle of 291°, with an opening angle of ~45º. The shape and orientation of the jet does not change over 19 hours of our observations, suggesting a ci…

IMAGE FROM NUCLEUS OF ISON COMET

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ANALYSIS OF THE LIGHT CCD CURVE OF COMET C/2012 S1 ISON

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The author , J.P.Navarro , analyzes the 3589 ccd's observations from MPC database and obtained the new and the best light ccd curve for this comet , C/2012 S1 ISON , adjust the principal light ccd curve based in 3.589 observations ccd's and calculated for the differential analysis , two new photometricals laws , the best adjust is new mathematical method for the analysis , based in polynomial regression , the old method of calculation based in linear regression , donot fit properly , the new method of polynomial regression in order 2 or 3 correctly whether all points of the curve, in particular the kite has a curvature characteristic in its data get three new Photometric parameters, a, b1 and b2, the author has been linked to with absolute magnitude (m0) and b1 and b2 are new indicators of internal activity of the comet , the absence of more new settings for all curve data, the results indicate a deceleration typical brightness of new comets oort cloud, most likely due to a ch…

Comet C/ISON Details Emerge as it Races Toward the Sun

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Scientists are unraveling more information on Comet C/2012 S1 (ISON) as it continues on its journey toward the Sun. Comet C/ISON will skim 730,000 miles above the Sun’s surface on Nov. 28 and has the potential to be readily visible from Earth starting in early December. “We measured the rotational pole of the nucleus. The pole indicates that only one side of the comet is being heated by the Sun on its way in until approximately one week before it reaches it closest point to the Sun,” said Planetary Science Institute Research Scientist Jian-Yang Li, who led a team that imaged the comet. “Since the surface on the dark side of the comet should still retain a large fraction of very volatile materials, the sudden exposure to the strong sunlight when it gets closer to the Sun than Mercury could trigger huge outbursts of material,” Li said. Li presented the findings today at the American Astronomical Society’s Division for Planetary Sciences 45th Annual Meeting in Denver. Comet C/I…

Current model photometrical visual of comet C/2012 S1 ISON

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The current photometrical visual model of comet ISON show ~ 1.5 - 2 visuals magnitudes below the theorical my photometric model is based only on visual observations, my previous calculations of the dust production rate confirmed that the comet will not be as bright as expected, compute a maximum visual magnitude is very risky