{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T16:13:35.322Z","years_from_j2000":26.681,"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-134606-d","name":"HD 134606 d","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":87.38022899771501,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":228.8103897,"dec_deg":-70.5203328,"epoch_ra_deg":229.47103,"epoch_dec_deg":-70.619912,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 134606","semi_major_axis_km":290369467.0287,"periapsis_km":null,"mass_kg":2.675531204770538e+26,"mass_msun":0.000134556,"constellation":"Apus","discovered":"2024","featured":false,"url":"https://spacecatalog.org/object/hd-134606-d","radius_km":48409.779,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 134606","host_v_mag":6.86,"eccentricity":0.092,"uncertainties":{"mass_kg":[1.7319286816595e+25,1.7319286816595e+25],"distance_ly":[0.06686205743193241,0.06653590105421567],"eccentricity":[0.045,0.045],"host_mass_solar":[0.059,0.07],"host_radius_solar":[0.036,0.039],"host_temperature_k":[85,86],"semi_major_axis_km":[6881502.052199999,6432708.440099999],"orbital_period_days":[6.9,5.3],"argument_of_periastron_deg":[28,34]},"host_mass_solar":1.046,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.158,"planets_in_system":5,"discovery_facility":"Multiple Observatories","host_spectral_type":"G5IV","host_temperature_k":5576,"orbital_period_days":966.5,"periastron_epoch_bjd":2455100,"equilibrium_temperature_k":207.68,"argument_of_periastron_deg":194},"designations":[{"catalog":"Exoplanet","designation":"HD 134606 d"}],"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."}