{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T02:17:50.505Z","years_from_j2000":26.677,"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":"gj-367-c","name":"GJ 367 c","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":30.699893055879507,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":146.121464,"dec_deg":-45.7790165,"epoch_ra_deg":146.378089,"epoch_dec_deg":-45.90207,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"GJ 367","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":2.4665053293978395e+25,"mass_msun":0.0000124044,"constellation":"Vela","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/gj-367-c","radius_km":11863.266000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"GJ 367","host_v_mag":10.153,"eccentricity":0.09,"uncertainties":{"mass_kg":[2.1499804324048965e+24,2.1499804324048965e+24],"distance_ly":[0.009246533308269675,0.009246533308269675],"eccentricity":[0.07,0.07],"host_mass_solar":[0.011,0.011],"host_radius_solar":[0.013,0.013],"host_temperature_k":[70,70],"orbital_period_days":[0.0078,0.0078],"argument_of_periastron_deg":[54,74]},"host_mass_solar":0.455,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.458,"planets_in_system":3,"discovery_facility":"La Silla Observatory","host_spectral_type":"M1.0 V","host_temperature_k":3522,"orbital_period_days":11.5301,"transit_midpoint_bjd":2459153.94,"argument_of_periastron_deg":-34},"designations":[{"catalog":"Exoplanet","designation":"GJ 367 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."}