{"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":"2026-09-05T07:59:40.959Z","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-1994-b","name":"TOI-1994 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1681.6720681988604,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":147.1745753,"dec_deg":-51.756564,"epoch_ra_deg":147.413528,"epoch_dec_deg":-51.881151,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1994","semi_major_axis_km":9170349.47391,"periapsis_km":null,"mass_kg":4.194855365462353e+28,"mass_msun":0.0210965,"constellation":"Vela","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-1994-b","radius_km":87220.23973374501,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1994","host_v_mag":10.514,"eccentricity":0.341,"uncertainties":{"mass_kg":[4.745311499391802e+27,4.935123959367474e+27],"radius_km":[5075.931987903,5862.344000402],"distance_ly":[28.99204041524132,30.003125186163228],"eccentricity":[0.059,0.054],"host_mass_solar":[0.17,0.18],"inclination_deg":[2.5,2.9],"host_radius_solar":[0.12,0.13],"host_temperature_k":[410,720],"semi_major_axis_km":[284235.95433,284235.95433],"orbital_period_days":[0.0000051,0.0000051],"argument_of_periastron_deg":[6.7,7.9]},"host_mass_solar":1.86,"inclination_deg":85.5,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":2.3,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":7700,"orbital_period_days":4.0337142,"transit_midpoint_bjd":2458854.37263,"equilibrium_temperature_k":2290,"argument_of_periastron_deg":131.6},"designations":[{"catalog":"Exoplanet","designation":"TOI-1994 b"},{"catalog":"Host star","designation":"TOI-1994"}],"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."}