{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T10:44:00.636Z","years_from_j2000":26.672,"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":"ogle-tr-56-b","name":"OGLE-TR-56 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":922.4978895165402,"distance_method":"NASA Exoplanet Archive sy_dist (Gaia DR2, 2018A&A...616A...1G)","ra_deg":269.1479583,"dec_deg":-29.5392222,"epoch_ra_deg":269.576705,"epoch_dec_deg":-29.543182,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"OGLE-TR-56","semi_major_axis_km":3564917.2587809996,"periapsis_km":null,"mass_kg":2.6383245989541977e+27,"mass_msun":0.00132685,"constellation":"Sagittarius","discovered":"2002","featured":false,"url":"https://spacecatalog.org/object/ogle-tr-56-b","radius_km":97444.61180000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"OGLE-TR-56","host_v_mag":15.3,"eccentricity":0,"uncertainties":{"mass_kg":[3.2267622989676824e+26,3.416677237163448e+26],"radius_km":[6435.5028999999995,6575.8211],"distance_ly":[5.955894059885581,5.955894059885581],"host_mass_solar":[0.078,0.072],"inclination_deg":[1,0.91],"host_radius_solar":[0.086,0.089],"host_temperature_k":[100,100],"semi_major_axis_km":[76294.914057,68815.02052199999]},"host_mass_solar":1.228,"inclination_deg":77.6,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.363,"planets_in_system":1,"discovery_facility":"OGLE","host_spectral_type":"F8 V","host_temperature_k":6050,"orbital_period_days":1.2119189,"transit_midpoint_bjd":2454995.81093,"equilibrium_temperature_k":2212},"designations":[{"catalog":"Exoplanet","designation":"OGLE-TR-56 b"},{"catalog":"Host star","designation":"OGLE-TR-56"}],"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."}