{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.689","julian_year":2026.689,"time":"2026-09-09T16:22:09.130Z","years_from_j2000":26.689,"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":"tres-5-b","name":"TrES-5 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1175.1838292425298,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":305.2219454,"dec_deg":59.4489033,"epoch_ra_deg":305.356744,"epoch_dec_deg":59.533433,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TrES-5","semi_major_axis_km":3678611.6405129996,"periapsis_km":null,"mass_kg":3.39766006302204e+27,"mass_msun":0.00170873,"constellation":"Cygnus","discovered":"2011","featured":false,"url":"https://spacecatalog.org/object/tres-5-b","radius_km":85361.5947426,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TrES-5","host_v_mag":13.677,"eccentricity":0,"uncertainties":{"mass_kg":[1.2907311971256912e+26,1.2907311971256912e+26],"radius_km":[1072.3818435,1072.3818435],"distance_ly":[6.200232740395292,6.265464015938641],"host_mass_solar":[0.03,0.03],"inclination_deg":[0.26,0.26],"host_radius_solar":[0.013,0.013],"host_temperature_k":[36,36],"semi_major_axis_km":[104718.50949,104718.50949],"orbital_period_days":[0.00000614,0.00000614]},"host_mass_solar":0.901,"inclination_deg":84.27,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.868,"planets_in_system":1,"discovery_facility":"TrES","host_temperature_k":5171,"orbital_period_days":1.48224686,"transit_midpoint_bjd":2456458.59219,"equilibrium_temperature_k":1480},"designations":[{"catalog":"Exoplanet","designation":"TrES-5 b"},{"catalog":"Host star","designation":"TrES-5"}],"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":"2026-09-09T11:17:28.634Z","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."}