{"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":"2026-09-07T11:46:34.997Z","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-4734-b","name":"TOI-4734 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1836.4821928821127,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":90.3581219,"dec_deg":12.5478825,"epoch_ra_deg":90.735673,"epoch_dec_deg":12.548756,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4734","semi_major_axis_km":11070242.431799999,"periapsis_km":null,"mass_kg":3.682361723647481e+26,"mass_msun":0.000185191,"constellation":"Orion","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-4734-b","radius_km":69633.20779632,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4734","host_v_mag":12.358,"uncertainties":{"mass_kg":[6.073998716832639e+25,6.263811178599961e+25],"radius_km":[1644.3160203360003,1787.300011012],"distance_ly":[60.378068642923544,64.54634715014352],"host_mass_solar":[0.097,0.074],"inclination_deg":[0.86,0.56],"host_radius_solar":[0.036,0.038],"host_temperature_k":[150,160],"semi_major_axis_km":[269276.16725999996,194477.23190999997],"orbital_period_days":[0.000011,0.00001]},"host_mass_solar":1.391,"inclination_deg":89.2,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.857,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6070,"orbital_period_days":6.235633,"transit_midpoint_bjd":2459710.23803,"eccentricity_upper_limit":0.12,"equilibrium_temperature_k":1468},"designations":[{"catalog":"Exoplanet","designation":"TOI-4734 b"},{"catalog":"Host star","designation":"TOI-4734"}],"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."}