{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T16:35:26.666Z","years_from_j2000":26.684,"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":"toi-1203-b","name":"TOI-1203 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":211.98305460235335,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":168.2267358,"dec_deg":-34.4069371,"epoch_ra_deg":168.548772,"epoch_dec_deg":-34.552995,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1203","semi_major_axis_km":7283920.324382999,"periapsis_km":null,"mass_kg":2.0962309215947738e+25,"mass_msun":0.0000105422,"constellation":"Hydra","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-1203-b","radius_km":9694.712000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1203","host_v_mag":8.59,"eccentricity":0.067,"uncertainties":{"mass_kg":[1.9110937176932413e+24,1.9708153963711551e+24],"radius_km":[293.3926,287.0145],"distance_ly":[0.6167617102623618,0.620349430417246],"eccentricity":[0.045,0.063],"host_mass_solar":[0.036,0.036],"inclination_deg":[0.32,0.24],"host_radius_solar":[0.011,0.011],"host_temperature_k":[62,62],"semi_major_axis_km":[142117.977165,140621.998458],"orbital_period_days":[0.0000049,0.000005],"argument_of_periastron_deg":[39,84.7]},"host_mass_solar":0.886,"inclination_deg":84.29,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.179,"planets_in_system":4,"discovery_facility":"La Silla Observatory","host_spectral_type":"G3 V","host_temperature_k":5737,"orbital_period_days":4.1572888,"periastron_epoch_bjd":2458546.16,"transit_midpoint_bjd":2458545.8916,"equilibrium_temperature_k":1361.2,"argument_of_periastron_deg":125.4},"designations":[{"catalog":"Exoplanet","designation":"TOI-1203 b"}],"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."}