{"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":"2026-09-07T09:42:49.675Z","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":"toi-771-c","name":"TOI-771 c","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":82.44841841026013,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":164.1138903,"dec_deg":-72.9851736,"epoch_ra_deg":164.317318,"epoch_dec_deg":-73.128485,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-771","semi_major_axis_km":6881502.052199999,"periapsis_km":null,"mass_kg":1.714012178056126e+25,"mass_msun":0.00000862001,"constellation":"Carina","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-771-c","radius_km":9567.150000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-771","host_v_mag":14.888,"eccentricity":0.065,"uncertainties":{"mass_kg":[2.269423789760724e+24,2.4485888257944655e+24],"distance_ly":[0.08382218907320306,0.08382218907320306],"eccentricity":[0.045,0.062],"host_mass_solar":[0.035,0.03],"host_radius_solar":[0.023,0.017],"host_temperature_k":[100,100],"semi_major_axis_km":[299195.7414,299195.7414],"orbital_period_days":[0.03,0.03],"argument_of_periastron_deg":[84,88]},"host_mass_solar":0.22,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.232,"planets_in_system":2,"discovery_facility":"Paranal Observatory","host_spectral_type":"M3","host_temperature_k":3370,"orbital_period_days":7.61,"periastron_epoch_bjd":2458573.8,"equilibrium_temperature_k":365,"argument_of_periastron_deg":-82},"designations":[{"catalog":"Exoplanet","designation":"TOI-771 c"}],"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."}