{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T17:10:25.617Z","years_from_j2000":26.686,"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":"hats-70-b","name":"HATS-70 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":4758.067085045168,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":109.1045212,"dec_deg":-31.2443947,"epoch_ra_deg":109.362587,"epoch_dec_deg":-31.291489,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-70","semi_major_axis_km":5433394.663823999,"periapsis_km":null,"mass_kg":2.4485930063119725e+28,"mass_msun":0.0123143,"constellation":"Canis Major","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hats-70-b","radius_km":98945.09809360001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-70","host_v_mag":12.227,"uncertainties":{"mass_kg":[3.037014581472215e+27,3.4166414041562413e+27],"radius_km":[5290.4170946,5647.8777091],"distance_ly":[204.85882084388655,223.74327511368597],"host_mass_solar":[0.12,0.12],"inclination_deg":[1.9,1.6],"host_radius_solar":[0.066,0.059],"host_temperature_k":[820,630],"semi_major_axis_km":[130150.14750899999,110702.42431799999],"orbital_period_days":[0.0000015,0.0000015]},"host_mass_solar":1.78,"inclination_deg":86.7,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.881,"planets_in_system":1,"discovery_facility":"HATSouth","host_temperature_k":7930,"orbital_period_days":1.8882378,"transit_midpoint_bjd":2456911.87486,"eccentricity_upper_limit":0.18,"equilibrium_temperature_k":2730},"designations":[{"catalog":"Exoplanet","designation":"HATS-70 b"},{"catalog":"Host star","designation":"HATS-70"}],"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."}