{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T20:03:53.015Z","years_from_j2000":26.684,"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":"qatar-1-b","name":"Qatar-1 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":605.3951604989334,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":303.3818697,"dec_deg":65.1623313,"epoch_ra_deg":303.453146,"epoch_dec_deg":65.24279,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Qatar-1","semi_major_axis_km":3488622.344724,"periapsis_km":null,"mass_kg":2.4561855427656533e+27,"mass_msun":0.00123525,"constellation":"Draco","discovered":"2010","featured":false,"url":"https://spacecatalog.org/object/qatar-1-b","radius_km":81715.4964747,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Qatar-1","host_v_mag":12.692,"eccentricity":0,"uncertainties":{"mass_kg":[9.300857155758657e+25,9.870297389784696e+25],"radius_km":[1787.3030725,1858.7951954000002],"distance_ly":[2.599466330402445,2.6255588406197847],"host_mass_solar":[0.041,0.043],"inclination_deg":[0.15,0.16],"host_radius_solar":[0.016,0.016],"host_temperature_k":[88,93],"semi_major_axis_km":[59839.14828,59839.14828],"orbital_period_days":[2.2e-7,2.2e-7]},"host_mass_solar":0.838,"inclination_deg":84.08,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.803,"planets_in_system":1,"discovery_facility":"Qatar","host_temperature_k":5013,"orbital_period_days":1.4200242,"periastron_epoch_bjd":2456174.17,"transit_midpoint_bjd":2456234.103218,"equilibrium_temperature_k":1418},"designations":[{"catalog":"Exoplanet","designation":"Qatar-1 b"},{"catalog":"Host star","designation":"Qatar-1"}],"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."}