{"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":"2026-09-07T19:03:55.436Z","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":"hd-67087-c","name":"HD 67087 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":249.58040488727323,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":121.9155672,"dec_deg":31.5511553,"epoch_ra_deg":122.338253,"epoch_dec_deg":31.473558,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 67087","semi_major_axis_km":577447780.902,"periapsis_km":null,"mass_kg":9.197138516398724e+27,"mass_msun":0.00462537,"constellation":"Gemini","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/hd-67087-c","radius_km":82277.49,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 67087","host_v_mag":8.05,"eccentricity":0.76,"uncertainties":{"mass_kg":[6.867993047960086e+27,1.8991493819576585e+28],"distance_ly":[1.0720760135549356,1.0812083921310045],"eccentricity":[0.24,0.17],"host_mass_solar":[0.04,0.04],"host_radius_solar":[0.32,0.32],"host_temperature_k":[47,47],"semi_major_axis_km":[55351212.158999994,64327084.40099999],"orbital_period_days":[156,193],"argument_of_periastron_deg":[25,28]},"host_mass_solar":1.36,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.55,"planets_in_system":2,"discovery_facility":"Multiple Observatories","host_spectral_type":"F8 V","host_temperature_k":6330,"orbital_period_days":2374,"periastron_epoch_bjd":2450322.5,"equilibrium_temperature_k":193.42,"argument_of_periastron_deg":256},"designations":[{"catalog":"Exoplanet","designation":"HD 67087 c"},{"catalog":"Host star","designation":"HD 67087"}],"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."}