{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T06:16:07.702Z","years_from_j2000":26.685,"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-2518-b","name":"TOI-2518 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":524.5409944629525,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":105.4448495,"dec_deg":-34.9196867,"epoch_ra_deg":105.688028,"epoch_dec_deg":-34.957605,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2518","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":3.4459408597156257e+25,"mass_msun":0.0000173301,"constellation":"Puppis","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-2518-b","radius_km":14467.997530175,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2518","host_v_mag":10.954,"uncertainties":{"radius_km":[1336.8665981840002,1673.075000798],"distance_ly":[2.35158748333772,2.374418429777892],"host_mass_solar":[0.114904,0.185167],"inclination_deg":[2.87646,1.45609],"orbital_period_days":[0.00007675123,0.00006423965]},"host_mass_solar":1.11,"inclination_deg":87.95748,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.993374,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5751.2,"orbital_period_days":6.89797425216,"transit_midpoint_bjd":2459231.04512184,"equilibrium_temperature_k":1095},"designations":[{"catalog":"Exoplanet","designation":"TOI-2518 b"},{"catalog":"Host star","designation":"TOI-2518"}],"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."}