{"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":"2026-09-05T08:37:19.769Z","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-4602-01","name":"TOI-4602.01","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":205.6862795741539,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":60.6003316,"dec_deg":31.3298354,"epoch_ra_deg":61.023378,"epoch_dec_deg":31.404756,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4602","semi_major_axis_km":7101410.922129,"periapsis_km":null,"mass_kg":3.302608830888633e+25,"mass_msun":0.0000166093,"constellation":"Perseus","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-4602-01","radius_km":15626.345000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4602","host_v_mag":8.32,"eccentricity":0,"uncertainties":{"mass_kg":[5.613837795723896e+24,5.554116117045983e+24],"radius_km":[1466.9630000000002,1466.9630000000002],"distance_ly":[0.6483988789008859,0.6523127554334869],"host_mass_solar":[0.02,0.02],"inclination_deg":[1.1,0.74],"host_radius_solar":[0.07,0.1],"host_temperature_k":[50,50],"semi_major_axis_km":[53855.233452,52359.254745],"orbital_period_days":[0.0000048,0.0000047]},"host_mass_solar":0.9,"inclination_deg":88.93,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.08,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"G5","host_temperature_k":5966,"orbital_period_days":3.9812999,"transit_midpoint_bjd":2460591.50097,"equilibrium_temperature_k":1344,"argument_of_periastron_deg":90},"designations":[{"catalog":"Exoplanet","designation":"TOI-4602.01"},{"catalog":"Host star","designation":"TOI-4602"}],"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."}