{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T10:23:09.505Z","years_from_j2000":26.677,"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-1052-b","name":"TOI-1052 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":423.36402453144166,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":337.5102738,"dec_deg":-75.6465606,"epoch_ra_deg":338.082393,"epoch_dec_deg":-75.50898,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1052","semi_major_axis_km":13617894.169821,"periapsis_km":null,"mass_kg":1.009296369656743e+26,"mass_msun":0.000050759,"constellation":"Octans","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-1052-b","radius_km":18305.147,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1052","host_v_mag":9.511,"eccentricity":0.18,"uncertainties":{"mass_kg":[1.0152685375245345e+25,1.0152685375245345e+25],"radius_km":[1530.7440000000001,1849.649],"distance_ly":[1.8101678963279262,1.8264757152137634],"eccentricity":[0.071,0.09],"host_mass_solar":[0.025,0.025],"inclination_deg":[0.2,0.24],"host_radius_solar":[0.033,0.033],"host_temperature_k":[62,62],"semi_major_axis_km":[94246.658541,92750.679834],"orbital_period_days":[0.000197,0.00019],"argument_of_periastron_deg":[24,14]},"host_mass_solar":1.204,"inclination_deg":87.53,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.264,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6146,"orbital_period_days":9.139703,"transit_midpoint_bjd":2458332.9442,"equilibrium_temperature_k":1135,"argument_of_periastron_deg":-119},"designations":[{"catalog":"Exoplanet","designation":"TOI-1052 b"}],"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."}