This form calculates which transits of the 3302 known transiting exoplanets or 4471 TESS Objects of Interest (TOIs) are observable from a given location at a given time. Specify a time window, an observing location (either an observatory from the list or choose "Enter latitude/longitude" at the end of the list), and optionally any filters (e.g. minimum transit depth or elevation). The output includes transit time and elevation, and links to further information about each object, including finding charts and airmass plots. (There are also stand-alone pages for generating finding charts (annotated JPGs or using Aladin Lite) and airmass plots for any target.)
Latest update (Sep. 2021): The database of transiting planets used below is currently slightly behind the NASA list and does not include transiting planets added to the NASA Exoplanet Archive since April 2021. I need to find time to update the code to deal with their new table format. I hope to do that soon. (The TOI list is up-to-date.)
If this tool is useful for your research, please consider citing it, e.g. Jensen E. L. N. 2013. Tapir: A Web Interface for Transit/Eclipse Observability, Astrophysics Source Code Library ascl:1306.007.
This page uses input ephemeris data from the NASA Exoplanet Archive and ExoFOP-TESS. The finding charts provided here make use of images from the Digitized Sky Survey, which are subject to copyright, and can be acknowledged like this.
This tool is part of the Tapir package for planning astronomical observations; the source code is freely available.
This page was created by Eric Jensen. Feedback welcome! Send here.