The LTE is a scientific research laboratory of the Observatoire de Paris and a research unit of the CNRS (UMR 8255). It is a multi-disciplinary laboratory specializing in time, space and the history of science.

The Observatoire de Paris is responsible for the Bureau des longitudes - governed by the law of the Messidor 7th, year III and by the decrees of March, 15th 1874 and January, 8th 1970 - to create and publish the french astronomical ephemerides, annual reports, calendars, tables and various documents, that the Bureau des longitudes has for mission to distribute by virtue of the french public service. This work is carried out by the LTE via its Service Espace - Observatoire de Paris (SE-OP).

Laboratoire Lagrange is a research laboratory of the Observatoire de la Côte d'Azur (OCA), the CNRS (UMR 7293), and the Université Côte d'Azur (UniCA). It is a multi-disciplinary laboratory, with research on the Solar system, exoplanets, stellar physics, the Milky Way and beyond, and instrumental development.

Laboratoire Lagrange has a strong expertize on both theoretical and observational studies of our Solar system. It is the host of the Nice Model, describing the formation of the Solar system, and it leads the processing of Solar system observations from the ESA Gaia mission.

The VO-IMCCE project was born in 2003. The first step was to make an interconnection between the VizieR service (CDS) and the service of calculation of asteroid ephemerides of the IMCCE. In 2004, we began the development of tools and services in the framework of the Virtual observatory. In 2005 the first version of the SkyBoT service is born to answer the simple question: which solar system bodies are visible in a given area of the sky at a given epoch? The service was put in production in January 2006 through a Web service, through the VO portal Aladin (CDS), and through various softwares, such as Audela and the WCS tools. A few months later, the Miriade services came out to provide new computing services of solar system body ephemerides.

Starting from 2008, the second main release of the SkyBoT and the Miriade services are online. In 2012, two new services enhance the portal: M4AST, a free on-line tool for modeling visible and near-IR spectra of atmosphereless bodies, and SsODNet, an information system dedicated to the solar and extra-solar system objects, fully released in February 2017. In 2018, the VO Solar System Portal adopts a new design to celebrate its 10 years of activity.

Since January 2013, VO-SSP has been accredited by the Institut national des sciences de l'Univers (INSU) as a National Observation Service AA-ANO5 (Data processing, archiving and distribution centers). The LTE - Observatoire de Paris is in charge of the SNO and Lagrange - OCA has been a partner since 2023.

The Solar System Portal could be developed thanks to the efforts of the international astronomical community through the International Virtual Observatory alliance (IVOA), which led to the construction of the Virtual Observatory. We are thankful, in particular, for the technical and human assistance brought by the European Virtual Observatory (EURO-VO) project and the Centre de Données astronomique de Strasbourg (CDS).

The Miriade ephemeris service and the SsODNet information system have been supported by the EuroPlaNet Research Infrastructure project, a four-year Coordination Action supported by the European Union, funded under the Sixth (2005-2008, European Planetology Network) and Seventh (2009-2012, Europlanet Research Infrastructure) framework programmes. In 2016 and 2017, the Miriade.ephemph service has benefited some funding from the Europlanet 2020 project funded by the European Union's Horizon 2020 research and innovation programme under grant agreement No 654208.

The Solar System Portal is the result of many years of fruitful collaborations with worldwide astronomers and science teams, in particular the TOP team of the Lagrange laboratory of the Observatoire de la Côte d'Azur.