{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-06T22:08:45.452Z","years_from_j2000":26.682,"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-733-b","name":"TOI-733 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":245.299602429741,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":159.4093183,"dec_deg":-40.888259,"epoch_ra_deg":159.706336,"epoch_dec_deg":-41.027606,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-733","semi_major_axis_km":9245148.40926,"periapsis_km":null,"mass_kg":3.416080020376669e+25,"mass_msun":0.00001718,"constellation":"Vela","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-733-b","radius_km":12705.175200000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-733","host_v_mag":9.44,"eccentricity":0.046,"uncertainties":{"mass_kg":[4.0610741500981384e+24,4.1805175074539655e+24],"radius_km":[574.029,542.1385],"distance_ly":[0.5727305992706014,0.5753398502923354],"eccentricity":[0.033,0.056],"host_mass_solar":[0.026,0.05],"inclination_deg":[0.82,0.77],"host_radius_solar":[0.012,0.008],"host_temperature_k":[60,60],"semi_major_axis_km":[583431.6957299999,538552.3345199999],"orbital_period_days":[0.000024,0.000019],"argument_of_periastron_deg":[68.1,158.9]},"host_mass_solar":0.956,"inclination_deg":88.85,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.949,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G","host_temperature_k":5585,"orbital_period_days":4.884765,"transit_midpoint_bjd":2458545.7767,"equilibrium_temperature_k":1055.8,"argument_of_periastron_deg":-53.2},"designations":[{"catalog":"Exoplanet","designation":"TOI-733 b"},{"catalog":"Host star","designation":"TOI-733"}],"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."}