{"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":"2026-09-06T08:05:46.642Z","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":"hd-150706-b","name":"HD 150706 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":92.20342951139021,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":247.8255687,"dec_deg":79.7894032,"epoch_ra_deg":247.409099,"epoch_dec_deg":79.730334,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 150706","semi_major_axis_km":1002305733.6899999,"periapsis_km":null,"mass_kg":4.6124427774088315e+27,"mass_msun":0.00231966,"constellation":"Ursa Minor","discovered":"2012","featured":false,"url":"https://spacecatalog.org/object/hd-150706-b","radius_km":84828.73000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 150706","host_v_mag":7.03,"eccentricity":0.38,"uncertainties":{"mass_kg":[7.212873479075538e+26,9.110998078832259e+26],"distance_ly":[0.0743636541194175,0.07468981049713425],"eccentricity":[0.32,0.28],"host_mass_solar":[0.12,0.12],"inclination_deg":[17,14],"host_radius_solar":[0.02,0.02],"host_temperature_k":[27,27],"semi_major_axis_km":[209437018.97999996,598391482.8],"orbital_period_days":[1498,5584],"argument_of_periastron_deg":[33,37]},"host_mass_solar":1.17,"inclination_deg":70,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.96,"planets_in_system":1,"discovery_facility":"Haute-Provence Observatory","host_spectral_type":"G0 V","host_temperature_k":5961,"orbital_period_days":5894,"periastron_epoch_bjd":2458179,"equilibrium_temperature_k":108.81,"argument_of_periastron_deg":132},"designations":[{"catalog":"Exoplanet","designation":"HD 150706 b"},{"catalog":"Host star","designation":"HD 150706"}],"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."}