{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T23:52:18.998Z","years_from_j2000":26.679,"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-32963-b","name":"HD 32963 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":124.19578244524786,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":76.9820146,"dec_deg":26.3276805,"epoch_ra_deg":77.398157,"epoch_dec_deg":26.36307,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 32963","semi_major_axis_km":510128739.08699995,"periapsis_km":null,"mass_kg":3.9291179214964116e+27,"mass_msun":0.00197601,"constellation":"Taurus","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/hd-32963-b","radius_km":85466.54000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 32963","host_v_mag":7.6,"eccentricity":0.07,"uncertainties":{"mass_kg":[1.2147997438443012e+27,1.5754434177980783e+27],"distance_ly":[0.32713484684989363,0.32909178511619414],"eccentricity":[0.04,0.04],"inclination_deg":[5.7,9.2],"host_radius_solar":[0.026318,0.026318],"host_temperature_k":[32,32],"semi_major_axis_km":[2991957.414,2991957.414],"orbital_period_days":[26,26],"argument_of_periastron_deg":[35,35]},"host_mass_solar":0.94,"inclination_deg":19.3,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.111044,"planets_in_system":1,"discovery_facility":"W. M. Keck Observatory","host_spectral_type":"G5 IV","host_temperature_k":5727,"orbital_period_days":2372,"periastron_epoch_bjd":2450532,"transit_midpoint_bjd":2455371,"equilibrium_temperature_k":157.63,"argument_of_periastron_deg":107},"designations":[{"catalog":"Exoplanet","designation":"HD 32963 b"},{"catalog":"Host star","designation":"HD 32963"}],"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."}