{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T20:40:48.963Z","years_from_j2000":26.676,"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-93083-b","name":"HD 93083 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":93.00642651332883,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":161.0866672,"dec_deg":-33.5776794,"epoch_ra_deg":161.397339,"epoch_dec_deg":-33.718521,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 93083","semi_major_axis_km":75995718.3156,"periapsis_km":null,"mass_kg":8.560541945081976e+26,"mass_msun":0.000430522,"constellation":"Antlia","discovered":"2005","featured":false,"url":"https://spacecatalog.org/object/hd-93083-b","radius_km":91206.83000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 93083","host_v_mag":8.3,"eccentricity":0.118,"uncertainties":{"mass_kg":[2.277749517319198e+25,2.277749517319198e+25],"distance_ly":[0.12948408195354713,0.12948408195354713],"eccentricity":[0.015,0.016],"host_mass_solar":[0.025,0.023],"host_radius_solar":[0.018,0.026],"host_temperature_k":[77.2,85.7],"semi_major_axis_km":[747989.3535,747989.3535],"orbital_period_days":[0.029,0.029],"argument_of_periastron_deg":[8.6,8.6]},"host_mass_solar":0.836,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.837,"planets_in_system":2,"discovery_facility":"La Silla Observatory","host_spectral_type":"K2 IV-V","host_temperature_k":5033.8,"orbital_period_days":144.72,"periastron_epoch_bjd":2453181.7,"transit_midpoint_bjd":2457852.24,"equilibrium_temperature_k":311.57,"argument_of_periastron_deg":334},"designations":[{"catalog":"Exoplanet","designation":"HD 93083 b"},{"catalog":"Host star","designation":"HD 93083"}],"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."}