{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T12:24:46.057Z","years_from_j2000":26.675,"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-500-e","name":"TOI-500 e","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":154.57333515302992,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":106.559098,"dec_deg":-47.5878156,"epoch_ra_deg":106.745564,"epoch_dec_deg":-47.628467,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-500","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":8.988112641026026e+25,"mass_msun":0.0000452025,"constellation":"Puppis","discovered":"2022","featured":false,"url":"https://spacecatalog.org/object/toi-500-e","radius_km":25448.619000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-500","host_v_mag":10.54,"eccentricity":0.073,"uncertainties":{"mass_kg":[6.629106333248432e+24,6.688828011926346e+24],"distance_ly":[0.15427196666001963,0.15427196666001963],"eccentricity":[0.051,0.068],"host_mass_solar":[0.017,0.017],"host_radius_solar":[0.016,0.016],"host_temperature_k":[100,100],"orbital_period_days":[0.28,0.28],"argument_of_periastron_deg":[80.7,228.2]},"host_mass_solar":0.74,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.678,"planets_in_system":4,"discovery_facility":"La Silla Observatory","host_spectral_type":"K6 V","host_temperature_k":4440,"orbital_period_days":61.3,"transit_midpoint_bjd":2458865.82,"argument_of_periastron_deg":103.7},"designations":[{"catalog":"Exoplanet","designation":"TOI-500 e"}],"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."}