{"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":"2026-09-08T04:49:38.143Z","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-470-b","name":"TOI-470 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":425.50361036926347,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":94.0099043,"dec_deg":-25.0314111,"epoch_ra_deg":94.284424,"epoch_dec_deg":-25.039926,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-470","semi_major_axis_km":17802146.6133,"periapsis_km":null,"mass_kg":1.0391572089956999e+26,"mass_msun":0.0000522607,"constellation":"Canis Major","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-470-b","radius_km":27680.954,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-470","host_v_mag":11.171,"uncertainties":{"radius_km":[1849.649,1849.649],"distance_ly":[1.2981023833126388,1.3078870746441411],"host_mass_solar":[0.09,0.09],"inclination_deg":[0.432,0.432],"host_radius_solar":[0.021,0.021],"host_temperature_k":[90,90],"semi_major_axis_km":[1196782.9656,1196782.9656],"orbital_period_days":[0.00003,0.00003]},"host_mass_solar":0.87,"inclination_deg":89.527,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.831,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G","host_temperature_k":5190,"orbital_period_days":12.19148,"transit_midpoint_bjd":2459205.9825,"equilibrium_temperature_k":660},"designations":[{"catalog":"Exoplanet","designation":"TOI-470 b"},{"catalog":"Host star","designation":"TOI-470"}],"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."}