{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.688","julian_year":2026.688,"time":"2026-09-09T02:51:15.156Z","years_from_j2000":26.688,"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-4465-b","name":"TOI-4465 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":395.10257440228577,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":276.1340312,"dec_deg":15.8418856,"epoch_ra_deg":276.436055,"epoch_dec_deg":15.855956,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4465","semi_major_axis_km":62232714.21119999,"periapsis_km":null,"mass_kg":1.1179953892567086e+28,"mass_msun":0.00562256,"constellation":"Hercules","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-4465-b","radius_km":89364.999721447,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4465","host_v_mag":10.427,"eccentricity":0.24,"uncertainties":{"mass_kg":[4.9351239593674735e+26,4.9351239593674735e+26],"radius_km":[5004.4399925650005,5719.3600097260005],"distance_ly":[1.9830307765178,1.9993385954036371],"eccentricity":[0.01,0.01],"host_mass_solar":[0.06,0.06],"inclination_deg":[4.44,2.71],"host_radius_solar":[0.041,0.041],"host_temperature_k":[19,19],"semi_major_axis_km":[2094370.1897999998,2094370.1897999998],"orbital_period_days":[0.00036,0.0004],"argument_of_periastron_deg":[0.57,0.58]},"host_mass_solar":0.93,"inclination_deg":89.95,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.014,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G V","host_temperature_k":5545,"orbital_period_days":101.94054,"transit_midpoint_bjd":2459395.1256,"equilibrium_temperature_k":427,"argument_of_periastron_deg":279.74},"designations":[{"catalog":"Exoplanet","designation":"TOI-4465 b"},{"catalog":"Host star","designation":"TOI-4465"}],"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."}