{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-08T00:00:51.018Z","years_from_j2000":26.684,"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-674-b","name":"GJ 674 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":14.836723159783572,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":262.1700476,"dec_deg":-46.8989826,"epoch_ra_deg":262.672512,"epoch_dec_deg":-46.920999,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"GJ 674","semi_major_axis_km":5834316.9573,"periapsis_km":null,"mass_kg":6.62313416538064e+25,"mass_msun":0.0000333087,"constellation":"Ara","discovered":"2007","featured":false,"url":"https://spacecatalog.org/object/gj-674-b","radius_km":21239.073,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"GJ 674","host_v_mag":9.38,"eccentricity":0.2,"uncertainties":{"distance_ly":[0.003310487233824946,0.003310487233824946],"eccentricity":[0.02,0.02],"host_radius_solar":[0.0108,0.0108],"host_temperature_k":[100,100],"orbital_period_days":[0.007,0.007],"argument_of_periastron_deg":[6,6]},"host_mass_solar":0.35,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.36463,"planets_in_system":1,"discovery_facility":"La Silla Observatory","host_spectral_type":"M2.5","host_temperature_k":3600,"orbital_period_days":4.6938,"periastron_epoch_bjd":2453780.085,"equilibrium_temperature_k":530.8,"argument_of_periastron_deg":143},"designations":[{"catalog":"Exoplanet","designation":"GJ 674 b"},{"catalog":"Host star","designation":"GJ 674"}],"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."}