2 PTF_Objects ivo://irsa.ipac/PTF/Catalog/PTF_Objects NASA/IPAC Infrared Science Archive PTF Team 2025-08-26 IRSA Support Team irsasupport@ipac.caltech.edu Palomar Transient Factory (PTF) is a fully-automated, wide-field survey aimed at a systematic exploration of the optical transient sky. The PTF Objects catalog is a list of the targets that label each individual lightcurve with "collapsed-lightcurve" metrics. For objects with transient_flag = 0, the object is tied to a reference-image (coadd) detection. If so, metadata characterizing the extracted reference-image source is also given. Such objects may be associated with time-variable sources that "survived" the co-addition process. For objects with transient_flag = 1, the object is transient at one or more epochs and would have been flagged as an outlier (hence omitted) during co-addition. If so, no associated reference-image metadata exists, although collapsed-lightcurve metrics are still given. https://irsa.ipac.caltech.edu/data/PTF/objects/Objects_cols.html Survey Research served-by IRSA TAP service 2 https://irsa.ipac.caltech.edu/SCS?table=ptf_objects& 180 598975024 false 233.738645 23.503186 0.01 2 To access this resource via TAP, issue ADQL queries on the table named ptf_objects. https://irsa.ipac.caltech.edu/TAP 2 https://irsa.ipac.caltech.edu/cgi-bin/Gator/nph-dd?catalog=ptf_objects Optical ptf The Palomar Transient Factory (PTF) sagecatmips24v2PTF Objects