{"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":"2026-09-07T21:01:33.820Z","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":"hip-71135-b","name":"HIP 71135 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":105.44994463597803,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":218.2158073,"dec_deg":-52.6464757,"epoch_ra_deg":218.67983,"epoch_dec_deg":-52.765062,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 71135","semi_major_axis_km":50115286.6845,"periapsis_km":null,"mass_kg":1.1227675591447794e+26,"mass_msun":0.0000564656,"constellation":"Lupus","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hip-71135-b","radius_km":29020.355,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 71135","host_v_mag":10.53,"eccentricity":0.21,"uncertainties":{"mass_kg":[2.4485888257944653e+25,2.4485888257944653e+25],"distance_ly":[0.16927516003498985,0.16992747279042333],"eccentricity":[0.13,0.13],"host_mass_solar":[0.04,0.04],"host_radius_solar":[0.033803,0.037461],"host_temperature_k":[110,107],"semi_major_axis_km":[1047185.0948999999,1047185.0948999999],"orbital_period_days":[0.381,0.381],"argument_of_periastron_deg":[71.72,71.72]},"host_mass_solar":0.66,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.681296,"planets_in_system":1,"discovery_facility":"Las Campanas Observatory","host_spectral_type":"M1","host_temperature_k":4146,"orbital_period_days":87.19,"equilibrium_temperature_k":285.11,"argument_of_periastron_deg":115.6},"designations":[{"catalog":"Exoplanet","designation":"HIP 71135 b"},{"catalog":"Host star","designation":"HIP 71135"}],"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."}