{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T13:37:35.659Z","years_from_j2000":26.686,"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-142415-b","name":"HD 142415 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":115.88923181755783,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":239.418989,"dec_deg":-60.2006948,"epoch_ra_deg":239.987141,"epoch_dec_deg":-60.278163,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 142415","semi_major_axis_km":158573742.942,"periapsis_km":null,"mass_kg":3.169883969411624e+27,"mass_msun":0.00159418,"constellation":"Norma","discovered":"2003","featured":false,"url":"https://spacecatalog.org/object/hd-142415-b","radius_km":86104.35,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 142415","host_v_mag":7.33,"eccentricity":0.5,"uncertainties":{"mass_kg":[2.277760936104161e+26,2.277760936104161e+26],"distance_ly":[0.136007209507882,0.13633336588559875],"host_mass_solar":[0.1,0.1],"host_radius_solar":[0.02,0.02],"host_temperature_k":[28,28],"semi_major_axis_km":[2991957.414,2991957.414],"orbital_period_days":[1.6,1.6],"argument_of_periastron_deg":[4,4]},"host_mass_solar":1.07,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.04,"planets_in_system":1,"discovery_facility":"La Silla Observatory","host_spectral_type":"G1 V","host_temperature_k":5940,"orbital_period_days":386.29999,"periastron_epoch_bjd":2451519,"equilibrium_temperature_k":283.72,"argument_of_periastron_deg":255},"designations":[{"catalog":"Exoplanet","designation":"HD 142415 b"},{"catalog":"Host star","designation":"HD 142415"}],"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."}