{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T13:12:46.582Z","years_from_j2000":26.678,"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-5153-b","name":"TOI-5153 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1273.5884699634482,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":91.5403204,"dec_deg":-19.9534443,"epoch_ra_deg":91.830182,"epoch_dec_deg":-19.955555,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-5153","semi_major_axis_km":23636463.5706,"periapsis_km":null,"mass_kg":6.187886195206909e+27,"mass_msun":0.00311198,"constellation":"Lepus","discovered":"2022","featured":false,"url":"https://spacecatalog.org/object/toi-5153-b","radius_km":75781.519778074,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-5153","host_v_mag":11.932,"eccentricity":0.091,"uncertainties":{"mass_kg":[3.226811819586425e+26,3.4166242795620975e+26],"radius_km":[2859.6800048630002,2859.6800048630002],"distance_ly":[14.373711565976883,14.699867943693624],"eccentricity":[0.026,0.024],"host_mass_solar":[0.07,0.07],"inclination_deg":[0.14,0.14],"host_radius_solar":[0.04,0.04],"host_temperature_k":[80,80],"semi_major_axis_km":[897587.2241999999,897587.2241999999],"orbital_period_days":[0.00007,0.00007],"argument_of_periastron_deg":[23,24]},"host_mass_solar":1.24,"inclination_deg":88.27,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.4,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"F8 V","host_temperature_k":6300,"orbital_period_days":20.33003,"transit_midpoint_bjd":2458486.1239,"equilibrium_temperature_k":906,"argument_of_periastron_deg":144},"designations":[{"catalog":"Exoplanet","designation":"TOI-5153 b"},{"catalog":"Host star","designation":"TOI-5153"}],"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."}