{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T10:40:40.860Z","years_from_j2000":26.686,"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-4513-b","name":"TOI-4513 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":334.66579761137325,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":18.0905179,"dec_deg":13.7550796,"epoch_ra_deg":18.445811,"epoch_dec_deg":13.897861,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4513","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":3.648994567220533e+25,"mass_msun":0.0000183513,"constellation":"Pisces","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-4513-b","radius_km":14962.232225848002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4513","host_v_mag":10.696,"uncertainties":{"radius_km":[1431.0344611090002,1728.021949612],"distance_ly":[1.5003193374970198,1.5101040288285221],"host_mass_solar":[0.120186,0.127628],"inclination_deg":[1.15578,0.5867],"orbital_period_days":[0.00103714509,0.00109793125]},"host_mass_solar":0.979,"inclination_deg":89.18965,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.796628,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5623.93,"orbital_period_days":9.76042253684,"transit_midpoint_bjd":2459468.70118266,"equilibrium_temperature_k":653},"designations":[{"catalog":"Exoplanet","designation":"TOI-4513 b"},{"catalog":"Host star","designation":"TOI-4513"}],"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."}