{"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":"2026-09-07T21:58:47.348Z","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-112570-b","name":"HD 112570 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":329.95936108092064,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":194.2824262,"dec_deg":46.1765638,"epoch_ra_deg":194.590262,"epoch_dec_deg":46.031125,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 112570","semi_major_axis_km":583431695.7299999,"periapsis_km":null,"mass_kg":6.491586131167984e+27,"mass_msun":0.00326471,"constellation":"Canes Venatici","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/hd-112570-b","radius_km":83553.11,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 112570","host_v_mag":6.11055,"eccentricity":0.2,"uncertainties":{"mass_kg":[1.5944246637956455e+27,2.657374439659409e+27],"distance_ly":[1.5459812303773637,1.562289049263201],"eccentricity":[0.14,0.16],"host_mass_solar":[0.12,0.12],"inclination_deg":[19,23],"host_radius_solar":[0.23,0.23],"host_temperature_k":[51,51],"semi_major_axis_km":[23935659.312,23935659.312],"orbital_period_days":[77,85],"argument_of_periastron_deg":[233,40]},"host_mass_solar":1.15,"inclination_deg":54,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":9.85,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_spectral_type":"K0 III","host_temperature_k":4750,"orbital_period_days":2615,"periastron_epoch_bjd":2455657,"equilibrium_temperature_k":364.01,"argument_of_periastron_deg":301},"designations":[{"catalog":"Exoplanet","designation":"HD 112570 b"},{"catalog":"Host star","designation":"HD 112570"}],"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."}