Celestial Mechanics and Dynamical Astronomy

FIGURE I - 2-yr IMPACT FACTOR EVOLUTION
Source: ISI Journal Citation Reports 1997-2011
impact factor


The impact factor in a year N is the number of citations in that year of papers published in the years N-1 and N-2, divided by the total number of papers published by the journal in those 2 years. The mean impact factor of "Celestial Mechanics and Dynamical Astronomy" in the past 3 years was 1.663 with the maximum1.811 reached in 2009.



FIGURE II - IMPACT FACTORS IF-2 to IF-5
Source: ISI Journal Citation Reports 1997-2011

impacto 345

The impact factors  IF-X  in a year N are given by the number of citations in that year of papers published in the years N-1 to N-X, divided by the total number of papers published by the journal in those X years. The IF-5 is the new 5-yr impact factor introduced since 2007 by the ISI. It was computed for the years prior to 2007 with the data taken from the ISI Journal Citation Reports since  2001. The mean impact factor IF-5 in the past triennium was 1.397 with the maximum 1.515 reached in 2010.
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Half-Life:
The impact factor does not take into account the lifetime of the papers published in the journal. The half-life of the papers published in "Celestial Mechanics and Dynamical Astronomy" i s  > 10.0 years. In Astronomy, there are only ~10 journals (out of  ~50) with half-life > 10.0 years.
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Rankings based on IF-2:
In the JCR 2011, Celestial Mechanics and Dynamical Astronomy appears in two comparative journal summary lists. In the list MATHEMATICS, INTERDISCIPLINARY APPLICATIONS it appears in rank 21 (out of 92 journals).
In the list ASTRONOMY & ASTROPHYSICS it appears in rank 30 (out of 56 journals)..