{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T12:52:28.562Z","years_from_j2000":26.683,"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-5605-b","name":"TOI-5605 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":310.088283768528,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":150.5380078,"dec_deg":50.1453867,"epoch_ra_deg":150.972004,"epoch_dec_deg":50.015997,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-5605","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":4.132740164511634e+25,"mass_msun":0.0000207841,"constellation":"Ursa Major","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-5605-b","radius_km":16111.801516643,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-5605","host_v_mag":12.073,"uncertainties":{"radius_km":[1769.9564901490003,2191.544690603],"distance_ly":[0.8343080141994298,0.8385480471097473],"host_mass_solar":[0.087757,0.0727],"inclination_deg":[2.36356,1.32519],"orbital_period_days":[0.00005458853,0.00005609577]},"host_mass_solar":0.68,"inclination_deg":87.82608,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.736044,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4583.79,"orbital_period_days":5.91340454843,"transit_midpoint_bjd":2459629.65111703,"equilibrium_temperature_k":669},"designations":[{"catalog":"Exoplanet","designation":"TOI-5605 b"},{"catalog":"Host star","designation":"TOI-5605"}],"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."}