{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T00:25:01.056Z","years_from_j2000":26.685,"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-179-b","name":"GJ 179 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":40.29988203068081,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":73.0245495,"dec_deg":6.4752347,"epoch_ra_deg":73.385062,"epoch_dec_deg":6.520668,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"GJ 179","semi_major_axis_km":360530868.38699996,"periapsis_km":null,"mass_kg":1.8032183697688846e+27,"mass_msun":0.000906865,"constellation":"Orion","discovered":"2009","featured":false,"url":"https://spacecatalog.org/object/gj-179-b","radius_km":88017.78000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"GJ 179","host_v_mag":11.963,"eccentricity":0.21,"uncertainties":{"mass_kg":[2.0879370597323927e+26,3.036999359610753e+26],"distance_ly":[0.030332543127657135,0.030332543127657135],"eccentricity":[0.08,0.08],"host_mass_solar":[0.03,0.03],"inclination_deg":[13,16],"host_radius_solar":[0.02,0.02],"host_temperature_k":[100,100],"semi_major_axis_km":[5983914.828,5983914.828],"orbital_period_days":[59,59],"argument_of_periastron_deg":[24,24]},"host_mass_solar":0.357,"inclination_deg":61,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.38,"planets_in_system":1,"discovery_facility":"W. M. Keck Observatory","host_spectral_type":"M3.5 V","host_temperature_k":3370,"orbital_period_days":2288,"periastron_epoch_bjd":2455140,"transit_midpoint_bjd":2454876,"equilibrium_temperature_k":64.53,"argument_of_periastron_deg":153},"designations":[{"catalog":"Exoplanet","designation":"GJ 179 b"},{"catalog":"Host star","designation":"GJ 179"}],"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."}