{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T06:19:25.104Z","years_from_j2000":26.677,"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":"hip-35965-b","name":"HIP 35965 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":163.6251531038027,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":111.2025182,"dec_deg":-51.3257507,"epoch_ra_deg":111.371387,"epoch_dec_deg":-51.377904,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 35965","semi_major_axis_km":2378306948.3886,"periapsis_km":null,"mass_kg":1.54678173633996e+28,"mass_msun":0.00777899,"constellation":"Carina","discovered":"2022","featured":false,"url":"https://spacecatalog.org/object/hip-35965-b","radius_km":80364.06,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 35965","host_v_mag":10.18,"eccentricity":0.138,"uncertainties":{"mass_kg":[5.798770652286642e+27,8.207490769360004e+27],"distance_ly":[0.16960131641270657,0.17025362916814007],"eccentricity":[0.087,0.107],"host_mass_solar":[0.09,0.09],"inclination_deg":[8.316,8.526],"host_radius_solar":[0.049007,0.032651],"host_temperature_k":[79.74,133.64],"semi_major_axis_km":[674088005.3742,756815627.8713],"orbital_period_days":[10171.69978,13613.39551],"argument_of_periastron_deg":[175.435,97.552]},"host_mass_solar":0.78,"inclination_deg":43.698,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.697551,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_temperature_k":4836,"orbital_period_days":26125.56497,"periastron_epoch_bjd":2448559.008,"equilibrium_temperature_k":48.85,"argument_of_periastron_deg":217.398},"designations":[{"catalog":"Exoplanet","designation":"HIP 35965 b"},{"catalog":"Host star","designation":"HIP 35965"}],"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."}