{"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":"2026-09-07T20:20:31.188Z","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-6-b","name":"Qatar-6 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":328.9221837997814,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":222.2100773,"dec_deg":22.1526136,"epoch_ra_deg":222.514118,"epoch_dec_deg":22.040531,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Qatar-6","semi_major_axis_km":6327989.930609999,"periapsis_km":null,"mass_kg":1.2679535877646495e+27,"mass_msun":0.000637672,"constellation":"Boötes","discovered":"2017","featured":false,"url":"https://spacecatalog.org/object/qatar-6-b","radius_km":75924.6345198,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Qatar-6","host_v_mag":11.496,"eccentricity":0,"uncertainties":{"mass_kg":[1.2527685148572886e+26,1.2527685148572886e+26],"radius_km":[5075.9407259,5075.9407259],"distance_ly":[1.5003193374970198,1.5133655926056895],"host_mass_solar":[0.021,0.021],"inclination_deg":[0.14,0.14],"host_radius_solar":[0.02,0.02],"host_temperature_k":[66,66],"semi_major_axis_km":[59839.14828,59839.14828],"orbital_period_days":[0.000018,0.000018],"argument_of_periastron_deg":[32,79]},"host_mass_solar":0.822,"inclination_deg":86.01,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.722,"planets_in_system":1,"discovery_facility":"Qatar","host_spectral_type":"K2 V","host_temperature_k":5052,"orbital_period_days":3.506195,"transit_midpoint_bjd":2457784.0327,"equilibrium_temperature_k":1006,"argument_of_periastron_deg":58},"designations":[{"catalog":"Exoplanet","designation":"Qatar-6 b"},{"catalog":"Host star","designation":"Qatar-6"}],"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."}