{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T19:06:20.038Z","years_from_j2000":26.687,"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-34-b","name":"HATS-34 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1659.6206355014315,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":0.7744866,"dec_deg":-62.4693167,"epoch_ra_deg":1.118496,"epoch_dec_deg":-62.319698,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-34","semi_major_axis_km":4736268.586362,"periapsis_km":null,"mass_kg":1.7861442007283462e+27,"mass_msun":0.000898278,"constellation":"Tucana","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/hats-34-b","radius_km":102233.73574700001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-34","host_v_mag":13.857,"uncertainties":{"mass_kg":[1.3666565616624964e+26,1.3666565616624964e+26],"radius_km":[13583.503351000003,13583.503351000003],"distance_ly":[12.707052475844323,12.707052475844323],"host_mass_solar":[0.031,0.031],"inclination_deg":[0.59,0.43],"host_radius_solar":[0.047,0.047],"host_temperature_k":[73,73],"semi_major_axis_km":[50863.276037999996,50863.276037999996],"orbital_period_days":[0.0000047,0.0000047]},"host_mass_solar":0.955,"inclination_deg":82.28,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.98,"planets_in_system":1,"discovery_facility":"HATSouth","host_temperature_k":5380,"orbital_period_days":2.1061607,"transit_midpoint_bjd":2456634.85732,"eccentricity_upper_limit":0.108,"equilibrium_temperature_k":1445},"designations":[{"catalog":"Exoplanet","designation":"HATS-34 b"},{"catalog":"Host star","designation":"HATS-34"}],"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."}