{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T06:24:04.715Z","years_from_j2000":26.674,"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-30-b","name":"CoRoT-30 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":3366.6839777055407,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":277.6011767,"dec_deg":6.8359338,"epoch_ra_deg":277.927444,"epoch_dec_deg":6.853862,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"CoRoT-30","semi_major_axis_km":12626060.28708,"periapsis_km":null,"mass_kg":5.504588928918388e+27,"mass_msun":0.00276834,"constellation":"Ophiuchus","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/corot-30-b","radius_km":72135.55200610001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"CoRoT-30","host_v_mag":15.571,"eccentricity":0.007,"uncertainties":{"mass_kg":[4.175895049524295e+26,4.175895049524295e+26],"radius_km":[5433.4013404,5433.4013404],"distance_ly":[145.03195647930428,158.41415265702227],"eccentricity":[0.031,0.031],"host_mass_solar":[0.05,0.03],"inclination_deg":[0.56,0.56],"host_radius_solar":[0.03,0.09],"host_temperature_k":[100,100],"semi_major_axis_km":[179517.44483999998,179517.44483999998],"orbital_period_days":[0.00024,0.00024],"argument_of_periastron_deg":[100.2,100.2]},"host_mass_solar":0.98,"inclination_deg":90,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.91,"planets_in_system":1,"discovery_facility":"CoRoT","host_spectral_type":"G3 V","host_temperature_k":5650,"orbital_period_days":9.06005,"transit_midpoint_bjd":2455665.5146,"equilibrium_temperature_k":894.6,"argument_of_periastron_deg":178.1},"designations":[{"catalog":"Exoplanet","designation":"CoRoT-30 b"},{"catalog":"Host star","designation":"CoRoT-30"}],"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."}