{"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":"2026-09-08T01:14:02.596Z","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-3807-b","name":"TOI-3807 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1375.5482152014795,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":139.1125648,"dec_deg":69.0741284,"epoch_ra_deg":139.715184,"epoch_dec_deg":68.962027,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-3807","semi_major_axis_km":6298070.356469999,"periapsis_km":null,"mass_kg":1.9740495837469894e+27,"mass_msun":0.000992778,"constellation":"Ursa Major","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-3807-b","radius_km":117961.79970629602,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-3807","host_v_mag":11.856,"eccentricity":0,"uncertainties":{"mass_kg":[2.657374439659409e+26,2.8471868996350808e+26],"distance_ly":[14.875992387660666,15.202148765377409],"host_mass_solar":[0.092,0.064],"host_radius_solar":[0.037,0.037],"host_temperature_k":[80,84],"semi_major_axis_km":[164557.65777,104718.50949],"orbital_period_days":[0.0000039,0.0000038]},"host_mass_solar":1.181,"inclination_deg":80.81,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.468,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5772,"orbital_period_days":2.8989727,"transit_midpoint_bjd":2459218.13454,"equilibrium_temperature_k":1646},"designations":[{"catalog":"Exoplanet","designation":"TOI-3807 b"},{"catalog":"Host star","designation":"TOI-3807"}],"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."}