{"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":"2026-09-08T05:03:42.118Z","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-1117-d","name":"TOI-1117 d","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":546.6315659257077,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":273.6020606,"dec_deg":-66.4199742,"epoch_ra_deg":274.288561,"epoch_dec_deg":-66.411986,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1117","semi_major_axis_km":12222146.036189998,"periapsis_km":null,"mass_kg":6.396191786404567e+25,"mass_msun":0.0000321674,"constellation":"Pavo","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-1117-d","radius_km":20856.387000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1117","host_v_mag":11.016,"eccentricity":0,"uncertainties":{"mass_kg":[9.436025231110379e+24,9.495746909788293e+24],"distance_ly":[2.96149990966803,2.9941155474397045],"host_mass_solar":[0.02,0.02],"host_radius_solar":[0.03,0.03],"host_temperature_k":[62,62],"semi_major_axis_km":[89758.72241999999,89758.72241999999],"orbital_period_days":[0.011,0.011]},"host_mass_solar":0.97,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.05,"planets_in_system":3,"discovery_facility":"La Silla Observatory","host_spectral_type":"G5 V","host_temperature_k":5635,"orbital_period_days":8.665,"equilibrium_temperature_k":978},"designations":[{"catalog":"Exoplanet","designation":"TOI-1117 d"}],"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."}