{"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":"2026-09-09T00:54:10.045Z","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-3288-b","name":"TOI-3288 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":653.9435373220706,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":297.1103158,"dec_deg":-43.0180008,"epoch_ra_deg":297.579473,"epoch_dec_deg":-42.951343,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-3288","semi_major_axis_km":3418311.3454949996,"periapsis_km":null,"mass_kg":3.20213619979556e+27,"mass_msun":0.0016104,"constellation":"Sagittarius","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-3288-b","radius_km":78069.26375645201,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-3288","host_v_mag":14.979,"eccentricity":0.021,"uncertainties":{"mass_kg":[2.0689558135556605e+26,2.1638620438421048e+26],"radius_km":[2359.235973716,2359.235973716],"distance_ly":[5.057054636498107,5.057054636498107],"eccentricity":[0.015,0.026],"host_mass_solar":[0.014,0.014],"inclination_deg":[0.61,0.61],"host_radius_solar":[0.02,0.02],"host_temperature_k":[80,80],"semi_major_axis_km":[137630.04104399998,133142.10492299998],"orbital_period_days":[3e-7,3e-7],"argument_of_periastron_deg":[108,91]},"host_mass_solar":0.643,"inclination_deg":89,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.672,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"M0±0.5","host_temperature_k":4072,"orbital_period_days":1.4338647,"transit_midpoint_bjd":2460343.9069,"equilibrium_temperature_k":973,"argument_of_periastron_deg":174},"designations":[{"catalog":"Exoplanet","designation":"TOI-3288 b"},{"catalog":"Host star","designation":"TOI-3288"}],"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."}