Saturday, January 31, 2015
ASTEROID-COMET P/2014 S4 GIBBS BY HST
Image of asteroid-comet P/2014 S4 GIBBS by HUBBLE SPACE TELESCOPE , processed by J.P.Navarro Pina , the central condensation is typycal of asteroid image and show the large and fine rectilineal dust tail .
Sunday, January 11, 2015
Update light visual curve of comet C/2014 Q2 LOVEJOY ( Analysis V )
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 .
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