{"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":"2026-09-08T04:48:45.036Z","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":"hd-196050-b","name":"HD 196050 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":165.277135156938,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":309.4637796,"dec_deg":-60.6347649,"epoch_ra_deg":310.014728,"epoch_dec_deg":-60.540907,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 196050","semi_major_axis_km":396434357.35499996,"periapsis_km":null,"mass_kg":8.921185618856587e+27,"mass_msun":0.00448659,"constellation":"Pavo","discovered":"2002","featured":false,"url":"https://spacecatalog.org/object/hd-196050-b","radius_km":82277.49,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 196050","host_v_mag":7.5,"eccentricity":0.2,"uncertainties":{"mass_kg":[1.5184996798053766e+27,1.5184996798053766e+27],"distance_ly":[0.33170103613792806,0.333005661648795],"eccentricity":[0.01,0.01],"host_mass_solar":[0.06,0.06],"inclination_deg":[7,11],"host_radius_solar":[0.03,0.03],"host_temperature_k":[28,28],"semi_major_axis_km":[4487936.120999999,4487936.120999999],"orbital_period_days":[4,4],"argument_of_periastron_deg":[6,6]},"host_mass_solar":1.27,"inclination_deg":42,"stars_in_system":3,"discovery_method":"Radial Velocity","host_radius_solar":1.42,"planets_in_system":1,"discovery_facility":"Anglo-Australian Telescope","host_spectral_type":"G3 V","host_temperature_k":5879,"orbital_period_days":1392,"periastron_epoch_bjd":2454962,"equilibrium_temperature_k":207.52,"argument_of_periastron_deg":178},"designations":[{"catalog":"Exoplanet","designation":"HD 196050 b"},{"catalog":"Host star","designation":"HD 196050"}],"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."}