{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T15:50:44.473Z","years_from_j2000":26.686,"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":"gl-725-a-b","name":"Gl 725 A b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":11.485270684917403,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":280.6834312,"dec_deg":59.638109,"epoch_ra_deg":280.775957,"epoch_dec_deg":59.663685,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Gl 725 A","semi_major_axis_km":10172655.2076,"periapsis_km":null,"mass_kg":1.6602626672460032e+25,"mass_msun":0.0000083497,"constellation":"Draco","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/gl-725-a-b","radius_km":9439.588,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Gl 725 A","host_v_mag":8.94,"eccentricity":0,"uncertainties":{"mass_kg":[2.0902587537269827e+24,2.0902587537269827e+24],"distance_ly":[0.0025440197461905987,0.0025440197461905987],"host_mass_solar":[0.008,0.008],"host_radius_solar":[0.003,0.003],"host_temperature_k":[68,68],"semi_major_axis_km":[149597.8707,149597.8707],"orbital_period_days":[0.0051,0.0051]},"host_mass_solar":0.33,"stars_in_system":2,"discovery_method":"Radial Velocity","host_radius_solar":0.351,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_spectral_type":"M3","host_temperature_k":3433,"orbital_period_days":11.2201,"periastron_epoch_bjd":2458597.7,"equilibrium_temperature_k":376.1,"argument_of_periastron_deg":0},"designations":[{"catalog":"Exoplanet","designation":"Gl 725 A b"},{"catalog":"Host star","designation":"Gl 725 A"}],"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."}