Products and Services
The SE-OP offers a wide range of products and services dedicated to ephemerides.
Online Ephemerides
Web Forms
Set of forms dedicated to calculating ephemerides for more than 1.5 million bodies of the Solar System, calendars and forecasts of astronomical phenomena such as rises and sets, eclipses, occultations…
Miriade
Set of VO-compliant services dedicated to the ephemerides of known Solar System bodies: orbital and physical ephemerides, apparent aspect, visibility…
Opale
API for calculating orbital and physical ephemerides of Solar System bodies, and predicting astronomical phenomena such as eclipses and occultations.
SkyBoT
Searching for and identifying Solar System bodies in astronomical images.
Astrodynamics and Ephemerides
The SE-OP team develops astrodynamics products for all types of natural bodies orbiting in the Solar System.
INPOP
Orbital solutions for the Sun, planets, Pluto, and the Moon.
NOE
Orbital solutions for natural satellites of planets.
DynAstVO
Orbital solutions for near-Earth asteroids (NEA).
Comets
Orbital solutions for comets.
Genoide
Orbital solutions for asteroid satellites.
Insola
Long-term solutions for the evolution of the orbit, orientation, and insolation of Earth and Mars.
AstroGeo
Very long-term solutions for the evolution of the Earth-Moon system.
VSOP and TOP 2013
Latest planetary analytical solutions developed at IMCCE: Variations séculaires des orbites planétaires (VSOP) and Theory of Outer Planets (TOP).
EOP
Time series of Earth Orientation Parameters (EOP).
In addition to the contemporary solutions presented above, solutions inherited from previous SE-OP work remain available on our FTP server.
Software and Tools
Arago
Astrometric reduction of space mission images.
TRIP
General computer algebra system dedicated to celestial mechanics.
M4AST
Tool for modelling asteroids: analysis and interpretation of asteroid spectra in the visible and near-infrared ranges.
DISHAS
Set of tools for calculating ephemerides based on the practices of ancient astronomers.
Data
Solar system Open Database Network (SsODNet)
Information system dedicated to Solar System objects and extrasolar systems: identification and access to all known parameters of objects.
Large Quasar Astrometric Catalogue
Equatorial coordinates and physical properties of almost all known quasars.
Meteor Showers
Ephemerides and meteor shower data.
VOccDB
Predictions of stellar occultations by natural satellites of Jupiter, Saturn, and Uranus between the years 2024 and 2033.
Stellar Occultations by Asteroid Satellites
Predictions of stellar occultations by asteroid satellites.
Gaiamoons
Predictions of stellar occultations by binary asteroids.
Lucky Star
Predictions of stellar occultations by trans-Neptunian objects.
NAROO
Archive of digitised astrophotographic plates.
Thematic Web Portals
VO Solar System Portal
Set of interoperable services, tools and data dedicated to the dynamics and physics of planetary systems.
Earth Orientation Parameters Product Centre
Products and data from the International Earth Rotation and Reference System Service (IERS): time series of Earth Orientation Parameters (EOP) and bulletins B, C and D.
Paris Observatory Geodetic VLBI Center
Products and data from the International VLBI Service for Geodesy and Astrometry (IVS): combined time series of Earth Orientation Parameters, station coordinate time series and radio source coordinates time series.
Paris Observatory Lunar Analysis Center
Products and data from the International Laser Ranging Service (ILRS): predictions et collection of Lunar Laser Ranging observations (LLR).
Vertical References
Products and data from the International Laser Ranging Service (ILRS): calibration records (tide gauges and GPS buoys).
FRIPON
Products and data from the Fireball Recovery and Inter-Planetary Observation Network (FRIPON).
General Public
The SE-OP also contributes to the transfer of knowledge by producing various materials aimed at a wide audience.
Astéroïdes, petits corps et Cie
Website dedicated to asteroids and small bodies: discoveries, classification, near-Earth objects, potential risks…
La méridienne de l’Observatoire de Paris
Discover and test the Meridian Line of the Paris Observatory.
Mars 2022
Website dedicated to understanding and observing the occultation of Mars by the Moon on 8 December 2022.
Mercure 2019
Website dedicated to Mercury's transit across the Sun on 11 November 2019: information about the phenomenon and educational materials.
VOS4O
A simple solution to all questions regarding the scaling of the Solar System.
Connaissance des temps
Explore the entire collection of Connaissance des temps.
Books
Introduction aux éphémérides et phénomènes astronomiques
A theoretical and practical guide presenting the calculations necessary for understanding celestial phenomena.
Official Publications
Annual publications of national ephemerides : Connaissance des temps, Guide de données astronomiques - Annuaire du Bureau des longitudes, Éphémérides nautiques.
Books for Everyone
Publications and documents on the research topics of the SE-OP aimed at various audiences.
Special Requests
Calculations and Information
Service available to the general public for all enquiries relating to ephemerides, celestial phenomena and calendars.
Media Centre
If you are a journalist or work for a media outlet, please contact us for any interview requests or to use images and content.
Pro
Please contact us for any commercial or professional use.
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