{"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":"2026-09-06T08:41:09.724Z","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-37605-b","name":"HD 37605 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":152.59682750406645,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":85.0074276,"dec_deg":6.0595116,"epoch_ra_deg":85.367446,"epoch_dec_deg":6.074342,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 37605","semi_major_axis_km":41438610.1839,"periapsis_km":null,"mass_kg":5.105980765100161e+27,"mass_msun":0.00256787,"constellation":"Orion","discovered":"2004","featured":false,"url":"https://spacecatalog.org/object/hd-37605-b","radius_km":84190.92,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 37605","host_v_mag":8.67,"eccentricity":0.6745,"uncertainties":{"mass_kg":[5.6944023402604025e+26,5.6944023402604025e+26],"distance_ly":[0.37083980146393725,0.37279673973023775],"eccentricity":[0.0019,0.0019],"host_mass_solar":[0.15,0.15],"host_radius_solar":[0.05,0.05],"semi_major_axis_km":[2243968.0604999997,2243968.0604999997],"orbital_period_days":[0.00062,0.00062],"argument_of_periastron_deg":[0.27,0.27]},"host_mass_solar":0.94,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.91,"planets_in_system":2,"discovery_facility":"McDonald Observatory","host_spectral_type":"K0","host_temperature_k":5329,"orbital_period_days":55.01292,"periastron_epoch_bjd":2463048.16,"equilibrium_temperature_k":465.76,"argument_of_periastron_deg":220.78},"designations":[{"catalog":"Exoplanet","designation":"HD 37605 b"},{"catalog":"Host star","designation":"HD 37605"}],"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."}