{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T16:20:10.631Z","years_from_j2000":26.686,"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-34222-b","name":"HIP 34222 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":74.48955048121616,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":106.4257786,"dec_deg":27.4704132,"epoch_ra_deg":106.844882,"epoch_dec_deg":27.429805,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 34222","semi_major_axis_km":73602152.3844,"periapsis_km":null,"mass_kg":1.5754434177980783e+27,"mass_msun":0.000792313,"constellation":"Gemini","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hip-34222-b","radius_km":88655.59000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 34222","host_v_mag":10.14,"eccentricity":0.305,"uncertainties":{"distance_ly":[0.08773606560580398,0.08806222198352072],"host_radius_solar":[0.051762,0.065645],"host_temperature_k":[145.69,93.12],"orbital_period_days":[2.9256,2.6753]},"host_mass_solar":0.62,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.6186,"planets_in_system":1,"discovery_facility":"Cerro Tololo Inter-American Observatory","host_spectral_type":"K7 V","host_temperature_k":4050,"orbital_period_days":159.986,"periastron_epoch_bjd":2458023.22,"equilibrium_temperature_k":218.98,"argument_of_periastron_deg":31.8},"designations":[{"catalog":"Exoplanet","designation":"HIP 34222 b"},{"catalog":"Host star","designation":"HIP 34222"}],"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."}