{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T08:22:53.561Z","years_from_j2000":26.68,"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":"hat-p-70-b","name":"HAT-P-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":1078.7263420965799,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":74.5523332,"dec_deg":9.9979794,"epoch_ra_deg":74.921914,"epoch_dec_deg":10.03956,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HAT-P-70","semi_major_axis_km":7089443.092472999,"periapsis_km":null,"mass_kg":1.286934928898851e+28,"mass_msun":0.00647218,"constellation":"Orion","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hat-p-70-b","radius_km":133690.269823,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HAT-P-70","host_v_mag":9.47,"eccentricity":0,"uncertainties":{"radius_km":[7149.21229,10723.818435],"distance_ly":[21.36976586800103,22.237341832727566],"host_mass_solar":[0.013,0.01],"inclination_deg":[0.91,1.42],"host_radius_solar":[0.091,0.119],"host_temperature_k":[690,540],"semi_major_axis_km":[158573.74294199998,46375.339917],"orbital_period_days":[6.8e-7,7.9e-7]},"host_mass_solar":1.89,"inclination_deg":96.5,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.858,"planets_in_system":1,"discovery_facility":"HATNet","host_temperature_k":8450,"orbital_period_days":2.74432452,"transit_midpoint_bjd":2458439.57519,"equilibrium_temperature_k":2562},"designations":[{"catalog":"Exoplanet","designation":"HAT-P-70 b"},{"catalog":"Host star","designation":"HAT-P-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."}