{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T13:35:38.758Z","years_from_j2000":26.686,"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-175167-b","name":"HD 175167 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":231.85250113285736,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":285.0033888,"dec_deg":-69.9450664,"epoch_ra_deg":285.744095,"epoch_dec_deg":-69.907637,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 175167","semi_major_axis_km":359034889.67999995,"periapsis_km":null,"mass_kg":2.809224407639947e+28,"mass_msun":0.014128,"constellation":"Pavo","discovered":"2009","featured":false,"url":"https://spacecatalog.org/object/hd-175167-b","radius_km":78450.63,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 175167","host_v_mag":8.01,"eccentricity":0.51,"uncertainties":{"mass_kg":[3.036999359610753e+27,3.4166242795620973e+27],"distance_ly":[0.5492473400749959,0.5515304347190131],"eccentricity":[0.035,0.035],"host_mass_solar":[0.04,0.04],"inclination_deg":[13,17],"host_radius_solar":[0.04,0.04],"host_temperature_k":[28,28],"semi_major_axis_km":[7479893.535,7479893.535],"orbital_period_days":[25,25],"argument_of_periastron_deg":[10,9]},"host_mass_solar":1.09,"inclination_deg":60,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.75,"planets_in_system":1,"discovery_facility":"Las Campanas Observatory","host_spectral_type":"G5 IV/V","host_temperature_k":5635,"orbital_period_days":1175,"periastron_epoch_bjd":2457195,"equilibrium_temperature_k":232.03,"argument_of_periastron_deg":329},"designations":[{"catalog":"Exoplanet","designation":"HD 175167 b"},{"catalog":"Host star","designation":"HD 175167"}],"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."}