viernes, 23 de octubre de 2015
Hi all , based in the analysis of the light visual and ccd curve of comet C/2013 US10 CATALINA and recopilation from database MPC /IAU and list of comet obs and observadorescometas yahoogroups.com of 1.210 observations , i analyzed the graphic and data and obtained than the probability of visual maximum magnitude for this comet is m1(max)~ 6.0 for 2016 , my differential analysis of the light curve based on a sum of observations CCDs and other visual and visual only gives the result for only next formula : m1=5.4+5log(d)+7.8log(r) and the poor activity index n=3.1 this result indicate than brightness of comet is a comet that behaves solid object type asteroid in actually heliocentric distance R=1.00 au , this is very typical of the new comets Oort Cloud (e= 1.000322) when they exceed the heliocentric distance of r = 1.5 au brightness stagnation and stifling dust activity and especially the gas is produced, in my opinion this activity remains off and could be reactivated in February 2016. ** Updated ( 25/10/2015 ) 1 .-The new calculations of J.P.Navarro based in the reference of A.Sosa and J.A. Fdez. from ''Masses of long period comets'' ( 2011 ) , show new physical parameters of comet C/2013 US10 CATALINA : The Log10 ( water production rate ) maximum based in correlation between visual total heliocentric magnitudes for US10 CATALINA show 10^29,5 MOLEC/S ( ~ 3.000 kg / sec )in R = 1.0 au . 2.-The Fraction active surface area calculated by Navarro Pina is FASA=2.4 , for comparison the comet C/2004 Q2 is FASA=2.4 , C/2007 W1 FASA=2.3 , this indicate high rate of fraction surface area for US10 CATALINA , by example the 1P/Halley FASA=0.2 . 3.-The Mass estimated is Log10 M (kg) =13.00 based in absolute magnitude for total visuals observations m0=5.4 , 10^12 kg . 4.-The Diameter calculated is log10(D)=0.6 kms. , based in the formula log10 D (km)=1.5-0.13*m0 ( Sosa & Fdez 2011 )
domingo, 13 de septiembre de 2015
lunes, 22 de junio de 2015
viernes, 29 de mayo de 2015
I just process the image of the surface of the nucleus of Comet 67P / Churyumov-Gerasimenko, ESA has placed at last an open kernel image file, I used to make one of them, very curious, because it shows an image of a plume important ice is highly reflective, the projected shadow can give an idea of how high is, likewise in the area of volatile ice deposits on the surface are, I hope you like it.
domingo, 17 de mayo de 2015
Analysis of the reduced light curve of comet C/2014 Q2 LOVEJOY , Water rate production , Fraction active surface , Masses estimated .
I estimate the masse for a comet C/2014 Q2 LOVEJOY , the diameter of the nucleus , maximun water rate production in the perihelion , and active surface fraction , this calculations is based in 3.200 observations from database MPC/IAU , and personal elaborating light visual and ccd curve of comet along time of near 1 year of work , the down graphic is reduced for geocentric distance in y axis , and x axis the heliocentric distance in au , this work is new analysis for comet C/2014 Q2 LOVEJOY and contain great quantity of observations . The introduction physical's parameters of Mn ( masse) , log Q(H2O) , f , and D , the results , is Max log Q(H2O) = 10e 28.58 mol s-1 ( 1000 kg/sec. ) , log 10 Mn ( kg) = 11.6 , D = 1.0 km , f = 2.3 . Link of download in pdf : https://www.facebook.com/download/371419113055823/~WRD0004%20Copy.pdf
domingo, 10 de mayo de 2015
Probability new discovery of Comet 29P / SW-1, based on a comprehensive analysis of 5,169 visual observations, and ccd Comet 29P / SW-1, in the period 1932-2015, the photometric analysis of the light curve by Pina JPNavarro shown in the 29P / SW-1 comet an average drop in outburts or explosions brightness a 2.0 magnitude in the last 20 years observed, from 1995-2015, the most likely hypothesis is that this comet exhibits a wear materials + CO gas and dust core level important.
jueves, 7 de mayo de 2015
Hi all , updated the light visual and ccd curve of comet C/2014 Q2 LOVEJOY , have been collected analyzed and graphed after 10 months of hard work rewarded after the publication of my analysis in the American magazine Sky and Telescope and hitting the forecast of maximum brightness for this comet after reaching visual magnitude +4 was the first analyst curves global warning light turn on the brightness of the comet, my upgrade is the largest and most comprehensive global visual light curve of this comet with 3,083 observations of all the observatories and observers of comets . Reduced light visual-ccd curve of comet C/2014 Q2 LOVEJOY , mred= m1-5 log (d) vs log R , the analysis show why the comet is more brightness in post-perihelion .
sábado, 31 de enero de 2015
domingo, 11 de enero de 2015
Hi , recent update the light visual and ccd curve of comet C/2014 Q2 LOVEJOY , the comet continue the increase of brightness , my last anaysis indicate variation of activity index of d(n)= -0.5 , the rate of increment continue high for this comet , n=9.7 , the power law is R^-9 , the normal power law is R^-4 , the formula general analyzed by Navarro Pina is m1= 2.9 + 5 log (delta) + 24.4 log (R) , the ICQ / MPC formula is m1= 4.0 + 5 log (delta) + 21.0 log (R) , the light curve is based in 828 from MPC/IAU , Comet Obs , Comet base , COBS , LIADA and observadorescometas original sources . * Preliminar results of comet C/2014 Q2 LOVEJOY * Calculated Mass , Diameter , Water rate production , and Fraction of active surface Area ( FASA ) Based in the work of Masses of long period comets ( A. Sosa , J.Fdez. 2011 ) , Analysis by J.P.Navarro Pina. * Water rate production log10 Q ( H2O ) = 10^-29.38 mol s-1 > 3.500 kgs /sec ( 3.5 tons / sec. ) Diameter ( km) * log10 D ( kms ) = 1.123 * log 10 M ( kgs ) = 13.96 For comparison : C/2004 Q2 .... log10 M ( kg ) = 13.0 C/2002 V1 NEAT .....log10 M ( kg) = 12.8 * Fraction of Active Surface Area = 3.1 For comparison : C/2004 Q2 , C/2007 W1 ..... FASA = 2.5 ** Note : These results are based on theoretical models and should be taken with caution .
Based in next telegram : ATEL #13945 ATEL #13945 Title: Rotation of Comet C/2020 F...
C/2019 Y4 ATLAS by HUBBLE SPACE TELESCOPE Original observing program: 16111 - Jewitt, David - University of California - Los Angeles Breakup...
Discovery Date December 28, 2019 Magnitude 19.6 mag Discoverer Asteroid Terrestrial-Impact Last Alert System (ATLAS) search program