{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T14:11:56.515Z","years_from_j2000":26.681,"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-145675-c","name":"HD 145675 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":58.48734012129958,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":242.6021014,"dec_deg":43.8163621,"epoch_ra_deg":242.819943,"epoch_dec_deg":43.745754,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"14 Her","semi_major_axis_km":2991957414,"periapsis_km":null,"mass_kg":1.4995184338078094e+28,"mass_msun":0.00754129,"constellation":"Hercules","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hd-145675-c","radius_km":80364.06,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"14 Her","host_v_mag":6.61935,"eccentricity":0.52,"uncertainties":{"mass_kg":[2.2777495197080646e+27,3.036999359610753e+27],"distance_ly":[0.02380941557332227,0.02380941557332227],"eccentricity":[0.12,0.16],"host_mass_solar":[0.04,0.04],"inclination_deg":[9.167,24.64],"host_radius_solar":[0.01,0.01],"host_temperature_k":[25,25],"semi_major_axis_km":[733029566.43,1795174448.3999999],"orbital_period_days":[1896.09685,2654.17497],"argument_of_periastron_deg":[4.584,4.011]},"host_mass_solar":0.97,"inclination_deg":116.3,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.93,"planets_in_system":2,"discovery_facility":"Multiple Observatories","host_spectral_type":"K0","host_temperature_k":5338,"orbital_period_days":15732.45889,"periastron_epoch_bjd":2436430.122,"transit_midpoint_bjd":2454680,"equilibrium_temperature_k":55.51,"argument_of_periastron_deg":172.5},"designations":[{"catalog":"Exoplanet","designation":"HD 145675 c"},{"catalog":"Host star","designation":"14 Her"}],"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."}