{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.665","julian_year":2026.665,"time":"2026-08-31T23:26:41.493Z","years_from_j2000":26.665,"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":"coconuts-2-b","name":"COCONUTS-2 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":35.506687903755555,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":117.300914,"dec_deg":-76.702696,"epoch_ra_deg":117.076424,"epoch_dec_deg":-76.768923,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"COCONUTS-2 A","semi_major_axis_km":1122881617474.2,"periapsis_km":null,"mass_kg":1.4235934498175404e+28,"mass_msun":0.00715946,"constellation":"Chamaeleon","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/coconuts-2-b","radius_km":80214.02380793501,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"COCONUTS-2 A","host_v_mag":11.298,"uncertainties":{"mass_kg":[7.592498399026883e+26,7.592498399026883e+26],"radius_km":[285.96798135200004,357.45997669],"distance_ly":[0.013698567864103223,0.01337241148638648],"host_mass_solar":[0.02,0.01],"host_radius_solar":[0.014,0.005],"host_temperature_k":[32,65],"semi_major_axis_km":[308171613642,778656916993.4999],"orbital_period_days":[100000000,470000000]},"host_mass_solar":0.4,"stars_in_system":1,"discovery_method":"Imaging","host_radius_solar":0.366,"planets_in_system":1,"discovery_facility":"NASA Infrared Telescope Facility (IRTF)","host_spectral_type":"M3 V","host_temperature_k":3552,"orbital_period_days":402000000,"equilibrium_temperature_k":493},"designations":[{"catalog":"Exoplanet","designation":"COCONUTS-2 b"},{"catalog":"Host star","designation":"COCONUTS-2 A"}],"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."}