The NASA Star and Exoplanet Database (NStED) was an on-line astronomical stellar and exoplanet catalog and data service that collated and cross-correlated

astronomical Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include ...

data and information on

exoplanet An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first det ...

s and their host

star A star is a luminous spheroid of plasma (physics), plasma held together by Self-gravitation, self-gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night sk ...

s. NStED was dedicated to collecting and serving important public data sets involved in the search for and characterization of exoplanets and their host stars. The data included stellar parameters (such as positions, magnitudes, and temperatures), exoplanet parameters (such as masses and orbital parameters) and discovery/characterization data (such as published radial velocity curves, photometric light curves, images, and spectra). The NStED collected and served public data to support the search for and characterization of extra-solar planets (exoplanets) and their host stars. The data included published light curves, images, spectra and parameters, and time-series data from surveys that aim to discover transiting exoplanets. All data were validated by the NStED science staff and traced to their sources. NStED was the U.S. data portal for the CoRoT mission. As of June 2007, the database catalogued 140,230 stars, but by December 2011, NStED was discontinued, with most data and services transferred to the

NASA Exoplanet Archive The NASA Exoplanet Archive is an online astronomical exoplanet catalog and data service that collects and serves public data that support the search for and characterization of extra-solar planets (exoplanets) and their host stars. It is part of ...

Search characteristics

Data were searchable either for an individual star or by stellar and planetary properties. NStED offered direct access to frequently accessed tables:
List of all known planetsList of all known planet-hosting stars

Survey programs

NStED also served photometric time-series data from surveys that aim to discover transiting exoplanets such as ''

Kepler Johannes Kepler (27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws of p ...

'' and

CoRoT CoRoT (French: ; English: Convection, Rotation and planetary Transits) was a space telescope mission which operated from 2006 to 2013. The mission's two objectives were to search for extrasolar planets with short orbital periods, particularly t ...

. NStED provided access to over 500,000 light curves from space and ground-based exoplanet transit survey programs, including: *

HATNet Project The Hungarian Automated Telescope Network (HATNet) project is a network of six small fully automated "HAT" telescopes. The scientific goal of the project is to detect and characterize extrasolar planets using the transit method. This network is us ...

* Trans-Atlantic Exoplanet Survey * KELT The transit survey data were linked to an online periodogram service that could be used to search for periods in the transit survey data sets. A user could also upload their own time series data to search for periods in their own data. The planetary orbital parameters were linked to an onlin
transit ephemeris prediction tool
which could be used to predict the probability that an exoplanet may transit and the date/time and observability of the transits.

References

External links

NASA Exoplanet Science Institute

Planet Hunters

Infrared Processing and Analysis Center
{{Exoplanet Astronomical databases Astronomy websites Exoplanet catalogues Stellar astronomy Computational astronomy Databases in the United States Defunct American websites Internet properties disestablished in 2011

Search characteristics

Survey programs

See also

References

External links