{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T01:09:48.411Z","years_from_j2000":26.682,"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-76-b","name":"HATS-76 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1257.9492716519305,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":70.3397665,"dec_deg":-32.3204175,"epoch_ra_deg":70.595392,"epoch_dec_deg":-32.268246,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-76","semi_major_axis_km":3976311.4032059996,"periapsis_km":null,"mass_kg":4.990169572742502e+27,"mass_msun":0.00250963,"constellation":"Caelum","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hats-76-b","radius_km":77139.867817058,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-76","host_v_mag":16.68,"uncertainties":{"mass_kg":[1.6893308936043165e+26,1.6893308936043165e+26],"radius_km":[2216.25198304,2216.25198304],"distance_ly":[18.726268426606826,18.726268426606826],"host_mass_solar":[0.021,0.016],"inclination_deg":[0.59,0.59],"host_radius_solar":[0.0079,0.0079],"host_temperature_k":[17,17],"semi_major_axis_km":[43383.38250299999,31415.552847],"orbital_period_days":[0.0000014,0.0000014]},"host_mass_solar":0.662,"inclination_deg":88.24,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.6259,"planets_in_system":1,"discovery_facility":"HATSouth","host_temperature_k":4016,"orbital_period_days":1.9416423,"transit_midpoint_bjd":2458424.55556,"eccentricity_upper_limit":0.062,"equilibrium_temperature_k":939.8},"designations":[{"catalog":"Exoplanet","designation":"HATS-76 b"},{"catalog":"Host star","designation":"HATS-76"}],"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."}