  We compile spectroscopic abundance data from 84 literature sources for 50
elements across 3058 stars in the solar neighborhood, within 150 pc of the Sun,
to produce the Hypatia Catalog. We evaluate the variability of the spread in
abundance measurements reported for the same star by different surveys. We also
explore the likely association of the star within the Galactic disk, the
corresponding observation and abundance determination methods for all catalogs
in Hypatia, the influence of specific catalogs on the overall abundance trends,
and the effect of normalizing all abundances to the same solar scale. The
resulting large number of stellar abundance determinations in the Hypatia
Catalog are analyzed only for thin-disk stars with observations that are
consistent between literature sources. As a result of our large dataset, we
find that the stars in the solar neighborhood may be reveal an asymmetric
abundance distribution, such that a [Fe/H]-rich group near to the mid-plane is
deficient in Mg, Si, S, Ca, Sc II, Cr II, and Ni as compared to stars further
from the plane. The Hypatia Catalog has a wide number of applications,
including exoplanet hosts, thick and thin disk stars, or stars with different
kinematic properties.
