Find an exoplanet transit to observe!

Select your region below and choose an event that interests you.

October 2021 Special Notes

This October, we’re focusing on long duration transits that are too long for a single location to complete. For these, each of you will observe between the “Start UTC” and “End UTC” times displayed on the event’s visibility map by clicking on the symbol nearest your location (see example). Only for shorter transits (~5 hours or less) should you use the table’s Start and End times. Orange diamond symbols on the map are good. By combining your observations from across the globe, we can accomplish exoplanet detections that one telescope cannot!

Generally, our predictions involve Jupiter-sized gas giant exoplanets or more massive brown dwarfs. Most of them orbit their stars in less than 10 Earth days, making the exoplanets “hot Jupiters” because their stars heat them to temperatures over 1600 °C (2000 °F).

Target names starting with “TOI” are new candidate exoplanets from NASA’s TESS space telescope that either need more observations to be confirmed as real exoplanets (and not false signals) or to better measure their orbits. Your observations can help astronomers do this! (TOI stands for TESS Object of Interest.)

Predictions Table explained
  • The Link automatically populates observing settings into the Unistellar app’s “Exoplanet transits” Science menu.
    • Note that these links will only work from your smartphone/tablet with the Unistellar app installed.
  • Finder is an image of the target field of view (your live view may be rotated by comparison).
  • Date is the observation start date in UTC (Universal Time)
  • Local is the observation start time in the timezone of your device’s browser.
  • eVscope settings are in Exp (exposure time in milliseconds), Gain (in decibels), Cad (cadence in milliseconds), Ra (right ascension), & Dec (declination).
  • Click on a row to display the event’s visibility map. Map legend:
    • Blue stars & shading = full visibility (you can observe the entire event)
    • Yellow triangles = full visibility but some tracking difficulty (when target altitude > 70 degrees)
    • Orange diamonds = partial visibility; you may miss the start or end of the event
    • No symbol = no visibility (either the target is not up or it is too close to daytime)


*** AFTER OBSERVING, please submit this REPORT FORM so we know to process your data. ***

Include questions and data requests in the form’s comments box or email them to

As of April 30, the “End UTC” time is displaying incorrectly in the table below as the local end time based on your browser’s timezone. It is NOT in UTC. Until this is fixed, treat “End UTC” as the observation end time in your local timezone (so it pairs with the “Local” start time). We will fix this ASAP and are sorry for any confusion. (The “Start UTC” and “Local” times are both correct.)
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