{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-06T03:19:14.737Z","years_from_j2000":26.679,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"corot-13-b","name":"CoRoT-13 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":3747.3084705009805,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":102.7211432,"dec_deg":-5.0864557,"epoch_ra_deg":103.052269,"epoch_dec_deg":-5.117576,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"CoRoT-13","semi_major_axis_km":7629491.405699999,"periapsis_km":null,"mass_kg":2.4826540713123474e+27,"mass_msun":0.00124856,"constellation":"Monoceros","discovered":"2010","featured":false,"url":"https://spacecatalog.org/object/corot-13-b","radius_km":63270.752,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"CoRoT-13","host_v_mag":15.005,"eccentricity":0,"uncertainties":{"mass_kg":[1.2527219319479197e+26,1.2527219319479197e+26],"radius_km":[1001.3617,1001.3617],"distance_ly":[183.1368060879514,202.608341837641],"host_mass_solar":[0.02,0.02],"inclination_deg":[0.36,0.34],"host_radius_solar":[0.03,0.03],"host_temperature_k":[90,90],"semi_major_axis_km":[463753.39916999993,463753.39916999993],"orbital_period_days":[0.00003,0.00003]},"host_mass_solar":1.09,"inclination_deg":88.02,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.01,"planets_in_system":1,"discovery_facility":"CoRoT","host_spectral_type":"G0 V","host_temperature_k":5945,"orbital_period_days":4.03519,"transit_midpoint_bjd":2454790.8091,"equilibrium_temperature_k":1700},"designations":[{"catalog":"Exoplanet","designation":"CoRoT-13 b"},{"catalog":"Host star","designation":"CoRoT-13"}],"source":{"id":"exoplanet_archive","name":"NASA Exoplanet Archive (Planetary Systems Composite Parameters)","url":"https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars","license":"Public domain (NASA)"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}