{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T04:48:13.537Z","years_from_j2000":26.682,"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-6038-a-b","name":"TOI-6038 A b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":584.2993659882143,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":51.6572691,"dec_deg":40.8172704,"epoch_ra_deg":52.102086,"epoch_dec_deg":40.911412,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-6038 A","semi_major_axis_km":10322253.0783,"periapsis_km":null,"mass_kg":4.6881517762162326e+26,"mass_msun":0.000235774,"constellation":"Perseus","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-6038-a-b","radius_km":40883.62100000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-6038 A","host_v_mag":9.913,"uncertainties":{"mass_kg":[5.912446189113466e+25,5.6735594744018105e+25],"radius_km":[1020.4960000000001,1275.6200000000001],"distance_ly":[4.650989946240761,4.722744349338445],"host_mass_solar":[0.06,0.066],"inclination_deg":[0.81,0.71],"host_radius_solar":[0.035,0.045],"host_temperature_k":[100,100],"semi_major_axis_km":[164557.65777,179517.44483999998],"orbital_period_days":[0.0000068,0.0000074]},"host_mass_solar":1.291,"inclination_deg":88.96,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.648,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6110,"orbital_period_days":5.8267311,"transit_midpoint_bjd":2459883.058,"equilibrium_temperature_k":1439},"designations":[{"catalog":"Exoplanet","designation":"TOI-6038 A b"},{"catalog":"Host star","designation":"TOI-6038 A"}],"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."}