{"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":"2026-09-06T15:53:12.817Z","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-64114-b","name":"HD 64114 b","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":102.82471195173596,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":117.982556,"dec_deg":-11.0337221,"epoch_ra_deg":118.300762,"epoch_dec_deg":-11.102241,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 64114","semi_major_axis_km":36801076.1922,"periapsis_km":null,"mass_kg":1.0630458804668655e+26,"mass_msun":0.0000534621,"constellation":"Monoceros","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hd-64114-b","radius_km":28127.421000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 64114","host_v_mag":7.71,"eccentricity":0.12,"uncertainties":{"mass_kg":[2.090258753726983e+25,2.090258753726983e+25],"distance_ly":[0.13339795848614805,0.13372411486386482],"eccentricity":[0.08,0.08],"host_mass_solar":[0.05,0.05],"host_radius_solar":[0.009871,0.027814],"host_temperature_k":[87,32],"semi_major_axis_km":[747989.3535,747989.3535],"orbital_period_days":[0.07,0.07],"argument_of_periastron_deg":[85.53,85.53]},"host_mass_solar":0.95,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.882858,"planets_in_system":1,"discovery_facility":"Las Campanas Observatory","host_spectral_type":"G7 V","host_temperature_k":5676,"orbital_period_days":45.791,"equilibrium_temperature_k":518.51,"argument_of_periastron_deg":215.3},"designations":[{"catalog":"Exoplanet","designation":"HD 64114 b"},{"catalog":"Host star","designation":"HD 64114"}],"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."}