{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T12:52:02.596Z","years_from_j2000":26.683,"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-1224-b","name":"TOI-1224 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":121.75808967819293,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":37.1978356,"dec_deg":-80.8991053,"epoch_ra_deg":36.994045,"epoch_dec_deg":-80.778407,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1224","semi_major_axis_km":5310724.4098499995,"periapsis_km":null,"mass_kg":3.0338612768380206e+25,"mass_msun":0.0000152577,"constellation":"Hydrus","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-1224-b","radius_km":13419.522400000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1224","host_v_mag":13.95,"uncertainties":{"radius_km":[580.4071,599.5414000000001],"distance_ly":[0.19536767025232932,0.1960199830077628],"host_mass_solar":[0.01,0.01],"inclination_deg":[0.8,0.56],"host_radius_solar":[0.012,0.012],"host_temperature_k":[66,66],"semi_major_axis_km":[508632.76037999993,254316.38018999997],"orbital_period_days":[0.0000021,0.0000022]},"host_mass_solar":0.4,"inclination_deg":89.19,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.404,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":3326,"orbital_period_days":4.1782745,"transit_midpoint_bjd":2458327.70236,"equilibrium_temperature_k":541},"designations":[{"catalog":"Exoplanet","designation":"TOI-1224 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."}