{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T15:19:31.589Z","years_from_j2000":26.678,"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-480-b","name":"TOI-480 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":177.85502970720648,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":88.3784618,"dec_deg":-16.2653974,"epoch_ra_deg":88.679032,"epoch_dec_deg":-16.25927,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-480","semi_major_axis_km":11519036.043899998,"periapsis_km":null,"mass_kg":1.2422109165006069e+26,"mass_msun":0.0000624726,"constellation":"Lepus","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/toi-480-b","radius_km":18201.312680058,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-480","host_v_mag":7.28,"eccentricity":0,"uncertainties":{"mass_kg":[2.5083105044723793e+25,2.627753861828207e+25],"radius_km":[653.1591527740001,844.076669723],"distance_ly":[0.4057385338796288,0.4073693157682125],"host_mass_solar":[0.0288,0.0282],"host_radius_solar":[0.0338,0.0443],"host_temperature_k":[119,90],"semi_major_axis_km":[149597.8707,149597.8707],"orbital_period_days":[0.000014,0.000014]},"host_mass_solar":1.2793,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.4877,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6174,"orbital_period_days":6.866196,"transit_midpoint_bjd":2458469.5659,"equilibrium_temperature_k":1198.94,"argument_of_periastron_deg":90},"designations":[{"catalog":"Exoplanet","designation":"TOI-480 b"},{"catalog":"Host star","designation":"TOI-480"}],"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."}