{"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":"2026-09-06T08:01:26.002Z","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":"oph-11-b","name":"Oph 11 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":444.11276246591285,"distance_method":"NASA Exoplanet Archive sy_dist (Gaia DR2, 2018A&A...616A...1G)","ra_deg":245.604961,"dec_deg":-24.0872219,"epoch_ra_deg":246.009816,"epoch_dec_deg":-24.1506,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Oph 11","semi_major_axis_km":36352282580.1,"periapsis_km":null,"mass_kg":2.6573877587881876e+28,"mass_msun":0.0133644,"constellation":"Scorpius","discovered":"2006","featured":false,"url":"https://spacecatalog.org/object/oph-11-b","radius_km":78450.63,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Oph 11","uncertainties":{"mass_kg":[9.49067056710067e+27,1.1388804680520804e+28],"distance_ly":[24.553731889638883,24.553731889638883],"host_mass_solar":[0.005,0.004],"host_radius_solar":[0.014001,0.014001],"host_temperature_k":[175,175],"semi_major_axis_km":[8227882888.499999,8227882888.499999],"orbital_period_days":[3650000,3650000]},"host_mass_solar":0.016,"stars_in_system":1,"discovery_method":"Imaging","host_radius_solar":0.232692,"planets_in_system":1,"discovery_facility":"Gemini Observatory","host_spectral_type":"M9","host_temperature_k":2375,"orbital_period_days":7300000,"equilibrium_temperature_k":2175},"designations":[{"catalog":"Exoplanet","designation":"Oph 11 b"},{"catalog":"Host star","designation":"Oph 11"}],"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."}