Find an exoplanet transit to observe

Select a region below and choose an event near your location.

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Scroll down for an explanation of the predictions table and maps.
*** 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 citizenscience@unistellaroptics.com.

!! WARNING — IMPORTANT NOTE ABOUT OBSERVATION END TIMES !!
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.)

Featured Exoplanet Transits for September

Observe a Giant Exoplanet Transit Above the Pacific

Credit: NASA JPL / Caltech English English Japanese The Unistellar Network has another exciting opportunity to observe a planet far outside our solar system this September. The giant exoplanet TOI 2010.01 will transit, or pass in front of, its star on September 24, and the event will be visible to observers on both sides of the…

Read more

New to exoplanet observing? Read the How To section before starting.

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).

!! WARNING — IMPORTANT NOTE ABOUT OBSERVATION END TIMES !!
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.)

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.)

!! WARNING — IMPORTANT NOTE ABOUT OBSERVATION END TIMES !!
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.)

Visit the Results section to see previous citizen scientist accomplishments.

Predictions Table explained

  • Click on a row to display the event’s visibility map. See below for a legend.
    • Click on a symbol on the map to show precise observation times, target altitudes, and Sun altitudes specific to that location.
  • 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 (Coordinated Universal Time)
  • Start UTC is the overall event’s observation start time in UTC. Your own start time may differ — click on the visibility map’s icons for location-specific times.
  • End UTC is the overall event’s observation end time in UTC. Your own end time may differ — click on the visibility map’s icons for location-specific times.
  • Local is the observation start time in the time zone 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).
  • 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)
!! WARNING — IMPORTANT NOTE ABOUT OBSERVATION END TIMES !!
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.)