Are there objects visible to the Kepler detectors that are not in the KIC?
Yes. The KIC includes objects as faint as 21st magnitude, although its coverage is not complete to this brightness level. In particular, variable sources and extended sources with low surface brightness may not be in the KIC because they were not in the ground-based catalogs that were used to make it. The “Galaxy/star” flag (range = 0 to 1) provides a limited identification of extended objects. However, users are strongly cautioned against assuming this indication is accurate as a clump of stars can be flagged as extended. • What are the objects with kepler_ids greater than 100,000,000? There are two types of objects with kepler_ids greater than 100,000,000. The vast majority are CCD monitors, which are engineering targets defined by the Kepler Project. The remainder are astronomical objects that have been or will be observed by Kepler, but which do not appear in the KIC, or groupings of KIC objects that can not be adequately resolved by Kepler. Examples include just a few GO targets,
