{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.688","julian_year":2026.688,"time":"2026-09-09T04:13:27.735Z","years_from_j2000":26.688,"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-1807-b","name":"TOI-1807 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":138.86923172234643,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":201.2826259,"dec_deg":38.9223671,"epoch_ra_deg":201.584645,"epoch_dec_deg":38.78226,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1807","semi_major_axis_km":1825094.02254,"periapsis_km":null,"mass_kg":1.4572089597410965e+25,"mass_msun":0.00000732851,"constellation":"Canes Venatici","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/toi-1807-b","radius_km":9546.841045323,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1807","host_v_mag":10,"eccentricity":0,"uncertainties":{"mass_kg":[3.4041356846410856e+24,3.5833007206748275e+24],"radius_km":[432.40118472700004,515.933757245],"distance_ly":[0.2022169541843809,0.2028692669398144],"host_mass_solar":[0.0258,0.0231],"inclination_deg":[1.2,1.1],"host_radius_solar":[0.0211,0.0206],"host_temperature_k":[58,60],"semi_major_axis_km":[29919.57414,29919.57414],"orbital_period_days":[7.2e-7,7.2e-7]},"host_mass_solar":0.8048,"inclination_deg":77.7,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.746,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4914,"orbital_period_days":0.54937097,"transit_midpoint_bjd":2458899.345,"equilibrium_temperature_k":1694.1,"argument_of_periastron_deg":90},"designations":[{"catalog":"Exoplanet","designation":"TOI-1807 b"},{"catalog":"Host star","designation":"TOI-1807"}],"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."}