## **This is the third Data Release from the ExoClock project!**
### **1. Catalogue of Observations**
The Catalogue of Observations contains 15728 transit observations for 450 extra-solar planets.
- 2911 observations that were submitted to the ExoClock website and validated until the 31st of December 2021: [https://exoclock.space/database/observations](https://www.exoclock.space/database/observations)
- 12633 observations aquired by the Kepler, K2 and TESS missions, until the 31st of December 2021: [https://exoclock.space/database/space](https://www.exoclock.space/database/space)
- 184 observatuons submitted to the ETD website and validated through ExoClock until the 31st of December 2021: [https://exoclock.space/database/ets](https://www.exoclock.space/database/etd)
The observations are organised by source and by planet. You can also find a summary on the planet’s dedicated page on the ExoClock website, e.g.
[https://exoclock.space/database/planets/CoRoT-2b](https://www.exoclock.space/database/planets/HAT-P-20b)
### **2. Catalogue of Ephemerides**
The Catalogue of Ephemerides contains the list of updated ephemerides for 450 exoplanets. The updated ephemerides are also indicated with a green check icon on the general database page on the Ephemerides & Planet information page on the ExoClock website:
[https://exoclock.space/database/planets](https://www.exoclock.space/database/planets)
The mid-transit data used to produce these epheerides are also organised by source and by planet.
### **Publications**
For more details see our publications below, which you will need to cite if you are using the ExoClock database for your work.
**Thank you!**
1. [Kokori, A., Tsiaras, A., Edwards, B. et al. 2022. ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations. The Astrophysical Journal Supplement Series (recommended for publication)](https://ui.adsabs.harvard.edu/abs/2022arXiv220909673K/abstract)
2. [Kokori, A., Tsiaras, A., Edwards, B. et al. 2022. ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides. The Astrophysical Journal Supplement Series (published)](https://doi.org/10.3847/1538-4365/ac3a10)
3. [Kokori, A., Tsiaras, A., Edwards, B. et al. 2022. ExoClock project: an open platform for monitoring the ephemerides of Ariel targets with contributions from the public. Experimental Astrononmy (published).](https://doi.org/10.1007/s10686-020-09696-3)
