{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T07:54:09.392Z","years_from_j2000":26.677,"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-216-01","name":"TOI-216.01","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":580.378966328059,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":73.9800129,"dec_deg":-63.2603301,"epoch_ra_deg":74.04036,"epoch_dec_deg":-63.21694,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-216","semi_major_axis_km":30951799.44783,"periapsis_km":null,"mass_kg":1.0629497758637636e+27,"mass_msun":0.000534573,"constellation":"Dorado","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/toi-216-01","radius_km":64418.810000000005,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-216","host_v_mag":12.324,"eccentricity":0.0046,"uncertainties":{"mass_kg":[3.7962491995134414e+25,3.7962491995134414e+25],"radius_km":[1275.6200000000001,1275.6200000000001],"distance_ly":[2.853868305021505,2.8799608152388445],"eccentricity":[0.0012,0.0027],"host_mass_solar":[0.03,0.03],"inclination_deg":[0.08,0.1],"host_radius_solar":[0.015,0.015],"host_temperature_k":[125,125],"semi_major_axis_km":[1226702.53974,1600697.2164899998],"argument_of_periastron_deg":[50,30]},"host_mass_solar":0.77,"inclination_deg":89.84,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.748,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5026,"orbital_period_days":34.525528,"transit_midpoint_bjd":2458331.411,"equilibrium_temperature_k":497,"argument_of_periastron_deg":190},"designations":[{"catalog":"Exoplanet","designation":"TOI-216.01"},{"catalog":"Host star","designation":"TOI-216"}],"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."}