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update light visual curve of comet C/2014 Q2 LOVEJOY ( Analysis IV )

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Update 27/12/2014 Analysis of the light visual and ccd curve of comet C/2014 Q2 LOVEJOY based in 567 observations from COBS , comet obs , LIADA , observadorescometas .

NEW UPDATE LIGHT VISUAL CCD CURVE C/2014 Q2 LOVEJOY ( Analysis III )

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Based in 511 observations ccd+visual of comet from MPC database , Comet Obs , LIADA , and observadorescometas , update the new light curve of comet C/2014 Q2 LOVEJOY , continue fast increase of visual magnitude and probable state of outburts , my personal analysis indicate several possible outburts for this comet and lack confirmation , the activity index continue high n=10.3 ( 15/12/14 ) and absolute magnitude m0=+2.5 in r = 1,4 au . if you continue this rapid increase in brightness could have magnitude +4.1 in January -2015 , the Afro production is high rate actually ~ 4.200 cms ( From Cometas Obs data ) , dust rate production is typically of great comets , the comet masses computed for C/2014 Q2 , in comparison of comet 2P/ and 10P/ . The possible calculates active surface areas f > ~ 2.4 for this comet . The pre-perihelion formula general calculated is based in 93 visual's observations , thank all's visuals observers , great job .

Update the light visual and ccd curve of comet C/2014 Q2 LOVEJOY ( Analysis II )

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Good notices from this comet , continue show high rate of increase of brightness based in my personal calculates and personal analysis from 66 visuals observations and total of 354 ccds and visuals observations from Comet Obs , ICQ , LIADA and observadorescometas group , the absolute magnitude is m0=+2.5 and activity index is high comparate others comets n=10.3 and power law R^(-10.3) , the probability of maximum visual magnitude in T-20 days is m1 ~ +4.1 , the visible naked-eye and easy for binoculars .

DUST RATE PRODUCTION AFRO PARAMETER C/2014 Q2 LOVEJOY

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Analyzing the graph of this comet, the results of my analysis 3 major explosions throw dust in the cometary nucleus at R = 2.3, 2.1, and 1.58 ua, with increases included in the ranges of 200 < Afro < 400 cms. dust, so it is probable, and nothing ruled that the comet suffer more 'outburst' of this type make up much brightness.

ANALYSIS AND LIGHT VISUAL AND CCD CURVE OF COMET C/2014 Q2 LOVEJOY ( Analysis I )

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First Observations of the Surfaces of Objects from the Oort Cloud

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Astronomers are announcing today the discovery of two unusual objects in comet-like orbits that originate in the Oort cloud but with almost no activity, giving scientists a first look at their surfaces. These results, presented today at the annual meeting of the Division of Planetary Sciences of the American Astronomical Society in Tucson, Arizona, are particularly intriguing because the surfaces are different from what astronomers expected, and they give us clues about the movement of material in the early solar system as the planets were assembled. On August 4, 2013 an apparently asteroidal object, C/2013 P2 Pan-STARRS, was discovered by the Pan STARRS1 survey telescope (PS1) on Haleakala, Maui, Hawaii. What made this object unique is its orbit – that of a comet coming from the Oort cloud, with an orbital period greater than 51 million years, yet no cometary activity was seen. The Oort cloud is a spherical halo of comet nuclei in the outer solar system that extends to about 100,0…

Revision and update ANALYSIS OF COMET C/2014 Q3 BORISOV

Download here 360 kb https://www.dropbox.com/s/8mbe4psopvt4gws/Analysis%20of%20the%20outburts%20of%20the%20comet%20C.pdf?dl=0

ALERT FOR COMET , C/2014 Q2 LOVEJOY NAKED EYE IN JANUARY 2015 ?

Interestingly comet could observe visual magnitude +6.5 in early January 2015, currently ICQ ephemeris put m1 = 12.4 ( 30/10/2014 ), and its visual magnitude observed is m1 = 11.0 ( S.Aguirre Mexico , last visual observation 30/10/2014 ), this -1.4 magnitudes brighter than theoretical, so which could reach maximum brightness for early January 2015 m1 = + 6.5, in the limit of visibility with the naked eye, will be observable in the hemisphere in mid-December 2014. My personal preliminary analysis of the light curve of this comet indicates a high rate of increase in brightness and a high slope in the brightness law (S. Yoshida n = 6.0) this indicates an activity index alo gas and dust nuclear level, in fact the cCD images show strong central condensation typical of bright comets, my personal opinion is that we have a good comet for December and January 2015.

New work of comet C/2014 Q3 BORISOV

Download here , new work of comet C/2014 Q3 BORISOV in format .pdf 345 kb. https://www.dropbox.com/s/bjwkh5m3lyi0u1b/Analysis%20of%20the%20outburts%20of%20the%20comet%20C%20Copy.pdf?dl=0

ANALYSIS OF WATER RATE PRODUCTION OF OUTBURST COMET C/2014 Q3 BORISOV

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News results of comet C/2014 Q3 BORISOV , i calculated the gas to dust mass ratio , basing in data log (QH2O) and Afro parameter , applied the formulae below indicate , the comet is relatively gas rich , the last data of Afro parameter indicate poor activity of dust 80-90 cms. , and my last data of log (OH) = 27.00 mol s-1 , 30 kg/sec. , d log(QH2O) =+12 kg/sec Others preliminar results , the flow velocity of water gas is 0.75 km s-1 , and gas temperature ~ 60 K ( Based in model D.Pierce et al. 2010 ) The increased brightness in the visual indicating increased activity in the Swan bands and cometary molecules of carbon , the last visual observation m1=+10.4 , in the outburst the comet is m1=+11.2 More data , the log Q ( C2 ) ~ 10e24.00 mol s-1 , comparison water rate production of comet 1P/HALLEY , the comet C/2014 Q3 BORISOV , at heliocentric distance r=1.5 au , 10e29 mol s-1 ( Halley ) , 10e27.00 mol s-1 ( Borisov ). To mass of comet C/2014 Q3 BORISOV is calculate by relation of Whi…

ANALYSIS OF OUTBURST OF COMET C/2014 Q3 BORISOV

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Hi all, I just made a small analysis of the visual light curve borisov comet C / 2014 Q3, few visual observations of the comet, but there are two conclusions: 1 Date of outburts, October 19 2 increase or variation in brightness of the 3 visual magnitudes The main hypothesis in this type of glitter explosions as fast, from one day to another, is a sudden outburst of gas and dust from the same core, constant brightness trend these days would indicate that the comet keeps this activity because a significant level blast volatile ices and dust in the same nucleus, green images confirm this fact.

LIGHT CURVE OF COMET C/2013 V5 OUKAIMEDEN

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ANALYSIS OF AFRO PARAMETER AND DUST RATE PRODUCTION IN COMET C/2012 S1 ISON

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NEW CCD CURVE OF COMET C/2014 E2 JACQUES

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CCD LIGHT CURVE REDUCED MAGNITUD vs LOG 10 HELIOCENTRIC DISTANCE AU Based in 854 ccd's observations from MPC DATABASE FROM IAU CCD LIGHT CURVE REDUCED MAGNITUDE vs HELIOCENTRIC DISTANCE

SOLAR AND HELIOSPHERIC OBSERVATORY/SOLAR WIND ANISOTROPIES OBSERVATIONS OF MODERATELY BRIGHT COMETS: 1999–2014

The author J.P.Navarro Pina investigated the recient observations of SOHO / SWAN of Observations of hydrogen Lyman-α (Ly-α) at 1215.7 Å in comets and their interpretation are important. Atomic hydrogen is the most abundant species in the atmosphere (or coma) of a comet being produced in a photodissociation chain originating with water molecules and including intermediate OH radicals. Water is the most abundant volatile species in a comet’s nucleus, and water sublimation controls the abundance and activity of the coma when comets are within 3 AU from the Sun. Measurements of the abundance and distribution of hydrogen in the coma, when appropriately modeled, can provide a reliable measure of the water production rate and its variation in time in comets. Virtually all compositional information is compared to water, making water the most important species for obtaining accurate production rates. Variations in production rate with time generally, and with heliocentric distance in particul…

Update Catalog of Nuclear Magnitudes of Periodic Comets

A catalog of a sample of 225 periodic comets is presented with our ``best estimates'' of their absolute nuclear magnitudes HN = V(1,0,0). It includes either Jupiter family (JF) comets (defined as those with Tisserand constants T > 2 and perihelion distance inside Jupiter q < QJ), Halley-type comets (T < 2) and a few Centaurs comets (T > 2 and perihelion distance outside Jupiter q >QJ). DOWNLOAD HERE ( 560 KB ): https://www.dropbox.com/s/ajsuz5w263oxzr1/new%20Catalog%20of%20Nuclear%20Magnitudes.pdf

LIGHT CCD CURVE OF COMET C/2012 K1 PANSTARRS FROM MPC DATABASE IAU BASED IN 2.836 OBSERVATIONS ...

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I just finished my last differential analysis curve ccd light based in more of 2.800 ccd's observations from MPC IAU , the light curve reduced the comet mred-log r sample 3 laws of different brightness due to the change of the strong component of the predominant chemical volatile comet, CH4 -> CO-> H2O in the heliocentric range 2.5 H2O, my analysis does not show favorable data regarding the brightness of the comet and I have doubts that it displays bright, my statistical analysis shows a 80% chance of not exceeding magnitude m1 = +8, and 20% to m1 = +6, ICQ gives m1 = 8.5 theoretical and actual visual observations really it 9.5-10.5

The comet-asteroid P/2013 P5 by HST

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P/2013 P5 PANSTARRS was discovered in Aug. 2013, displaying a cometary tail, but with orbital elements typical for a member of the inner asteroid Main Belt. We monitored the object from 2013 Aug. 30 until Oct. 05 using the CFHT, NTT, CA 1.23m, Perkins 1.8m (Lowell), and the 0.6m TRAPPIST telescopes. We measured its nuclear radius to be r < 0.25-0.29km, and its colours g-r = 0.58+/-0.05 and r-i = 0.23+/-0.06, typical for an S-class asteroid. We failed to detect any rotational light curve, with an amplitude < 0.05mag and a double-peaked rotation period < 20h. A detailed Finson-Probstein analysis of deep NTT and CFHT images indicated that the object was active since at least late January 2013 until the time of the latest observations in 2013 September, with at least two peaks of activity around 2013 June 14+/-10d and 2013 July 22+/-3d. The changes of activity level and the activity peaks were extremely sharp and short, shorter than the temporal resolution of our observations (ab…

ANALYSIS OF THE LIGHT CURVE OF COMET C/2012 X1 LINEAR

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ANALYSIS OF LIGHT CURVE OF COMET C/2013 R1 LOVEJOY

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Beginning of activity in 67P/Churyumov-Gerasimenko and predictions for 2014–2015

C. Snodgrass1, C. Tubiana1, D. M. Bramich2, K. Meech3,4, H. Boehnhardt1 and L. Barrera5 1 Max Planck Institute for Solar System Research, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany e-mail: snodgrass@mps.mpg.de 2 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany 3 Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA 4 University of Hawaii NASA Astrobiology Institute, Honolulu, HI 96822, USA 5 Universidad Metropolitana de Ciencias de la Educación (UMCE), Avda. Jose Pedro Alessandri 774, 832000 Santiago, Chile Received: 5 June 2013 Accepted: 25 July 2013 Abstract Context. Comet 67P/Churyumov-Gerasimenko was selected in 2003 as the new target of the Rosetta mission. It has since been the subject of a detailed campaign of observations to characterise its nucleus and activity. Aims. We present previously unpublished data taken around the start of activity of the comet in 2007/8, before its last perihelion passage…

LIGHT CURVE OF DATABASE OF MPC OF COMET C/2013 A1 SIDING-SPRING

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CCD CURVE OF COMET C/2012 K1 PANSTARRS

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Periodogram of light curve ccd of comet C/2012 K1 PANSTARRS , to investigate the latent periodicities in the light curve ccd i applied the phase dispersion minimization technique of software NASA Exoplanet Archive Periodogram Service and periodogram type Lomb-Scargle . rank 1 period 0.998 power 218.8 rank 2 period 0.499 power 184.2 rank 3 period 0.333 power 180 Database MPC 1711 ccd's observations . Note : he P-values above are computed for 6776 periods sampled, and an exponential power distribution is assumed. A note of caution when interpreting the results from the periodogram: The calculated statistical significance (p-value) of ranked periods may not be reliable. Several factors may invalidate the assumptions applied in estimating the statistical significance.