{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T07:37:25.548Z","years_from_j2000":26.666,"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-34445-e","name":"HD 34445 e","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":150.32775758429105,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":79.4207483,"dec_deg":7.3527156,"epoch_ra_deg":79.783682,"epoch_dec_deg":7.38197,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 34445","semi_major_axis_km":40196947.85709,"periapsis_km":null,"mass_kg":1.0033242017889517e+26,"mass_msun":0.0000504586,"constellation":"Orion","discovered":"2017","featured":false,"url":"https://spacecatalog.org/object/hd-34445-e","radius_km":27170.706000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 34445","host_v_mag":7.31,"eccentricity":0.09,"uncertainties":{"mass_kg":[1.7319286816595e+25,1.7319286816595e+25],"distance_ly":[0.3232209703172927,0.3248517522058764],"eccentricity":[0.062,0.062],"host_mass_solar":[0.02,0.02],"host_radius_solar":[0.08,0.08],"host_temperature_k":[44,44],"semi_major_axis_km":[284235.95433,284235.95433],"orbital_period_days":[0.045,0.045],"argument_of_periastron_deg":[120.3,120.3]},"host_mass_solar":1.07,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.38,"planets_in_system":6,"discovery_facility":"Multiple Observatories","host_spectral_type":"G0 V","host_temperature_k":5836,"orbital_period_days":49.175,"equilibrium_temperature_k":637.76,"argument_of_periastron_deg":303.7},"designations":[{"catalog":"Exoplanet","designation":"HD 34445 e"},{"catalog":"Host star","designation":"HD 34445"}],"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":"2026-08-30T09:56:50.739Z","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."}