{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T04:26:23.296Z","years_from_j2000":26.669,"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":"moa-bin-29-b","name":"MOA-bin-29 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":23222.33409343213,"distance_method":"NASA Exoplanet Archive sy_dist (Kondo+ 2019, 2019AJ....158..224K)","ra_deg":269.3759583,"dec_deg":-29.7365639,"epoch_ra_deg":269.805336,"epoch_dec_deg":-29.73994,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"MOA-bin-29","semi_major_axis_km":71806977.93599999,"periapsis_km":null,"mass_kg":1.134711894880362e+27,"mass_msun":0.000570663,"constellation":"Sagittarius","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/moa-bin-29-b","radius_km":89931.21,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"MOA-bin-29","uncertainties":{"mass_kg":[7.166601441349655e+26,2.2753959576285156e+27],"distance_ly":[3424.6419660258057,3750.798343742549],"host_mass_solar":[0.02,0.07],"semi_major_axis_km":[14959787.07,17951744.483999997]},"host_mass_solar":0.03,"stars_in_system":1,"discovery_method":"Microlensing","planets_in_system":1,"discovery_facility":"MOA"},"designations":[{"catalog":"Exoplanet","designation":"MOA-bin-29 b"},{"catalog":"Host star","designation":"MOA-bin-29"}],"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":"2026-09-01T22:58:55.274Z","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."}