{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T08:09:26.486Z","years_from_j2000":26.683,"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":"gaia23bral-b","name":"Gaia23braL b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":14122.57115513499,"distance_method":"NASA Exoplanet Archive sy_dist (Harris+ 2026, 2026arXiv260701853H)","ra_deg":155.6294583,"dec_deg":-63.2639167,"epoch_ra_deg":155.847161,"epoch_dec_deg":-63.399337,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Gaia23braL","semi_major_axis_km":725100879.2829,"periapsis_km":null,"mass_kg":3.0939430976034543e+27,"mass_msun":0.00155599,"constellation":"Carina","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/gaia23bral-b","radius_km":86104.35,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Gaia23braL","host_v_mag":19.8628,"uncertainties":{"mass_kg":[7.17491098731929e+26,7.972123318978228e+26],"distance_ly":[3300.702542493443,3271.3484684989367],"host_mass_solar":[0.146,0.17],"host_temperature_k":[258,258],"semi_major_axis_km":[120875079.5256,115190360.439]},"host_mass_solar":0.774,"stars_in_system":1,"discovery_method":"Microlensing","host_radius_solar":1.36181,"planets_in_system":1,"discovery_facility":"European Space Agency (ESA) Gaia Satellite","host_temperature_k":5055,"equilibrium_temperature_k":129.2},"designations":[{"catalog":"Exoplanet","designation":"Gaia23braL b"},{"catalog":"Host star","designation":"Gaia23braL"}],"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."}