  Kepler-62f is the first exoplanet small enough to plausibly have a rocky
composition orbiting within the habitable zone (HZ) discovered by the Kepler
Mission. The planet is 1.4 times the size of the Earth and has an orbital
period of 267 days. At the time of its discovery, it had the longest period of
any small planet in the habitable zone of a multi-planet system. Because of its
long period, only four transits were observed during Kepler's interval of
observations. It was initially missed by the Kepler pipeline, but the first
three transits were identified by an independent search by Eric Agol, and it
was identified as a planet candidate in subsequent Kepler catalogs. However in
the latest catalog of exoplanets (Thompson et al., 2018), it is labeled as a
false positive. Recent exoplanet catalogues have evolved from subjective
classification to automatic classifications of planet candidates by algorithms
(such as `Robovetter'). While exceptionally useful for producing a uniform
catalogue, these algorithms sometimes misclassify planet candidates as a false
positive, as is the case of Kepler-62f. In particularly valuable cases, i.e.,
when a small planet has been found orbiting in the habitable zone (HZ), it is
important to conduct comprehensive analyses of the data and classification
protocols to provide the best estimate of the true status of the detection. In
this paper we conduct such analyses and show that Kepler-62f is a true planet
and not a false positive. The table of stellar and planet properties has been
updated based on GAIA results.
