Celestial
Mechanics and Dynamical Astronomy
FIGURE I - 2-yr IMPACT FACTOR EVOLUTION
Source: ISI Journal Citation Reports 1997-2009

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 impact factor of "Celestial Mechanics and Dynamical Astronomy" reached 1.811 in 2009
FIGURE II - IMPACT FACTORS IF-2 to IF-5
Source: ISI Journal Citation Reports 1997-2009
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.
.
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" is > 10.0 years. In
Astronomy, there are only ~10 journals
(out of ~50) with half-life > 10.0 years.
.
In the JCR 2009, Celestial Mechanics and Dynamical Astronomy appears in two comparative journal summary lists;.
In the list MATHEMATICS, INTERDISCIPLINARY APPLICATIONS it appears in rank 14 (out of 80 journals).
In the list ASTRONOMY & ASTROPHYSICS it appears in rank 26 (out of 53 journals)..