  In many real life situations, it is observed that the first digits (i.e.,
$1,2,\ldots,9$) of a numerical data-set, which is expressed using decimal
system, do not follow a random distribution. Instead, smaller numbers are
favoured by nature in accordance with a logarithmic distribution law, which is
referred to as Benford's law. The existence and applicability of this empirical
law have been extensively studied by physicists, accountants, computer
scientists, mathematicians, statisticians, etc., and it has been observed that
a large number of data-sets related to diverse problems follow this
distribution. However, applicability of Benford's law has been hardly tested
for extrasolar objects. Motivated by this fact, this paper investigates the
existence of Benford's distribution in the extrasolar world using Kepler data
for exoplanets. The investigation has revealed the presence of Benford's
distribution in various physical properties of these exoplanets. Further,
Benford goodness parameters are computed to provide a quantitative measure of
coincidence of real data with the ideal values obtained from Benford's
distribution. The quantitative analysis and the plots have revealed that
several physical parameters associated with the exoplanets (e.g., mass, volume,
density, orbital semi-major axis, orbital period, and radial velocity) nicely
follow Benford's distribution, whereas some physical parameters (e.g., total
proper motion, stellar age and stellar distance) moderately follow the
distribution, and some others (e.g., longitude, radius, and effective
temperature) do not follow Benford's distribution. Further, some specific
comments have been made on the possible generalizations of the obtained result,
its potential applications in analyzing data-set of candidate exoplanets, and
how interested readers can perform similar investigations on other interesting
data-sets.
