{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T03:59:00.883Z","years_from_j2000":26.685,"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-1184-b","name":"TOI-1184 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":191.11002489761495,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":272.2045196,"dec_deg":60.6787845,"epoch_ra_deg":272.282488,"epoch_dec_deg":60.682333,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1184","semi_major_axis_km":8381519.901708899,"periapsis_km":null,"mass_kg":4.061074150098138e+25,"mass_msun":0.0000204237,"constellation":"Draco","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-1184-b","radius_km":15243.659000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1184","host_v_mag":10.988,"eccentricity":0,"uncertainties":{"mass_kg":[1.3735986095920172e+25,1.3735986095920172e+25],"radius_km":[1492.4754000000003,1594.525],"distance_ly":[0.25374966186362635,0.2544019746190599],"host_mass_solar":[0.08,0.08],"inclination_deg":[1.26893,0.70007],"host_radius_solar":[0.06,0.06],"host_temperature_k":[128,128],"semi_major_axis_km":[349011.8323431,321635.422005],"orbital_period_days":[0.000002726,0.000002592]},"host_mass_solar":0.71,"inclination_deg":89.00938,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.69,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4534,"orbital_period_days":5.748433803,"transit_midpoint_bjd":2459960.5115,"equilibrium_temperature_k":715.47,"argument_of_periastron_deg":90},"designations":[{"catalog":"Exoplanet","designation":"TOI-1184 b"},{"catalog":"Host star","designation":"TOI-1184"}],"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."}