Exoplanet Transit Database
{{Infobox website
| name = Exoplanet Transit Database
| url = http://var2.astro.cz/ETD/
| type = Astronomy
| author = Operated by the Czech Astronomical Society by its Variable Stars and Exoplanet Section
| current_status = Active
}}
File:Theoretical Transiting Exoplanet Light Curve.jpg
The Exoplanet Transit Database (ETD) is a database operated by the Variable Star and Exoplanet Section of the Czech Astronomical Society.{{Cite journal|last=Poddany|first=S.|title=New tools and improvements in the Exoplanet Transit Database|url=https://www.epj-conferences.org/articles/epjconf/pdf/2011/01/epjconf_ohp2010_06008.pdf|journal=EPJ Web of Conferences|year=2011|volume=11|page=06008|doi=10.1051/epjconf/20101106008|bibcode=2011EPJWC..1106008P|doi-access=free}} The database came online in September 2008 and consists of three sections: transit prediction, processing, uploading data.{{Cite journal|last1=Poddaný|first1=Stanislav|last2=Brát|first2=Luboš|last3=Pejcha|first3=Ondřej|date=2010-03-01|title=Exoplanet Transit Database. Reduction and processing of the photometric data of exoplanet transits|journal=New Astronomy|volume=15|issue=3|pages=297–301|doi=10.1016/j.newast.2009.09.001|arxiv=0909.2548|bibcode=2010NewA...15..297P|s2cid=15457725}} The ETD gives information about mid-transit time, duration, and depth of transit, among other parameters.{{Cite book|last=Brat|first=L.|chapter=ETD - Exoplanet Transit Database|url=http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=2010ASPC..435..443B&db_key=AST&page_ind=0&data_type=GIF&type=SCREEN_VIEW&classic=YES|access-date=2021-02-18|title=Binaries - Key to Comprehension of the Universe|series=ASP Conference Series|year=2010|volume=435|page=443|bibcode=2010ASPC..435..443B}}
Together with the NASA Exoplanet Archive, it is considered one of the main databases that allows astronomers to predict transit events and schedule observation sessions. The database includes transit light curves of exoplanets that are suitable for ground‐based observations.{{cite journal|arxiv=1910.11438
|doi=10.1016/j.newast.2019.101305
|title=Light curve analysis of ground-based data from exoplanets transit database
|year=2020
|last1=Davoudi
|first1=F.
|last2=Jafarzadeh
|first2=S.J.
|last3=Poro
|first3=A.
|last4=Basturk
|first4=O.
|last5=Mesforoush
|first5=S.
|last6=Fasihi Harandi
|first6=A.
|last7=Gozarandi
|first7=M.J.
|last8=Zare Mehrjardi
|first8=Z.
|last9=Maley
|first9=P.D.
|last10=Khakpash
|first10=S.
|last11=Rokni
|first11=K.
|last12=Sarostad
|first12=A.
|journal=New Astronomy
|volume=76
|page=101305
|bibcode=2020NewA...7601305D
|s2cid=202931761
}}