{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T18:25:04.756Z","years_from_j2000":26.687,"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-4363-b","name":"TOI-4363 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":253.6684489255749,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":37.1105554,"dec_deg":-12.5493631,"epoch_ra_deg":37.4352,"epoch_dec_deg":-12.428914,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4363","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":2.25150728615735e+25,"mass_msun":0.0000113232,"constellation":"Cetus","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-4363-b","radius_km":11269.418521213,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4363","host_v_mag":12.678,"uncertainties":{"radius_km":[1488.007796074,1588.5668978850001],"distance_ly":[0.7005838993355649,0.7048239322458825],"host_mass_solar":[0.086038,0.079867],"inclination_deg":[3.70265,2.14487],"orbital_period_days":[0.00002376345,0.00002511381]},"host_mass_solar":0.62,"inclination_deg":86.43493,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.69132,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4278.45,"orbital_period_days":2.11867592279,"transit_midpoint_bjd":2459153.80959543,"equilibrium_temperature_k":884.71},"designations":[{"catalog":"Exoplanet","designation":"TOI-4363 b"},{"catalog":"Host star","designation":"TOI-4363"}],"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."}