' Transit Timing Variations (TTVs) using Kepler Observations
Extrasolar Planetary Systems - Planetary Dynamics - Planet Formation - Exoplanet Searches - Modeling Stars & Planets - Astrobiology - Astrostatistics - High Performance Computing

Transit Timing Variations (TTVs) based Kepler Observations

Recent TTV Planet Discoveries

  • Kepler space telescope adds 41 planets to its lengthening list: Existence of alien worlds confirmed by two teams using transit timing method
  • MSNBC story

  • Supporting Graphics

  • Sizes of latest batch of planets confirmed via TTVs


  • Animation: Confirming Planets using Transit Timing Variations

    This animation shows the how planet transit times differ depending on whether the system contains one planet or multiple planets. (Credit: NASA Ames Research Center/Kepler Mission)
  • Animation: Kepler's Planetary Systems in Motion

    This animation shows the orbital position of the planets in systems with multiple transiting planets discovered by NASA's Kepler mission. All the colored planets have been verified. More vivid colors indicate planets that have been confirmed by their gravitational interactions. Several of these systems contain additional planet candidates (shown in grey) that have not yet been verified. (Credit: Dan Fabrycky, UC Santa Cruz)

  • Associated Scientific Papers
  • Kepler-48 through Kepler-60: Steffen et al. 2012 (confirmed via correlated TTVs & dynamical stability)
  • Kepler-48, 49, 53, 57, & 58 and KOIs 152, 500, 869, 877, 880, 898 & 1589: Xie 2012 (sinusoidal TTVs)

Planet Discovery Papers using TTVs

Circumbinary Planet Discovery Papers

Catalog Papers

When more detailed transit time analyses are avaliable, investigators should use transit times reported in those papers.

Papers including Upper Limits from TTVs (selected)

Other Key Kepler Papers

Kepler Light Curves & Other Data Products are avaliable at MAST

Table of Confirmed Kepler Planets

Animations