{"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":"2026-09-07T23:26:26.348Z","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-10090-c","name":"HIP 10090 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":268.7323073868004,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":32.4351198,"dec_deg":-30.7470844,"epoch_ra_deg":32.732748,"epoch_dec_deg":-30.619799,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 10090","semi_major_axis_km":134638083.63,"periapsis_km":null,"mass_kg":1.6134059097932125e+27,"mass_msun":0.000811405,"constellation":"Fornax","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/hip-10090-c","radius_km":88655.59000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 10090","host_v_mag":8.94,"eccentricity":0.188,"uncertainties":{"mass_kg":[2.2777495197080647e+26,5.694373799270162e+25],"distance_ly":[0.9540074048214744,0.9611828451312429],"eccentricity":[0.048,0.043],"host_mass_solar":[0.04,0.04],"inclination_deg":[3.1,1.3],"host_radius_solar":[0.078834,0.068518],"host_temperature_k":[72,72],"semi_major_axis_km":[1495978.707,1495978.707],"orbital_period_days":[0.56,0.32],"argument_of_periastron_deg":[19,14]},"host_mass_solar":0.94,"inclination_deg":153.8,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.38268,"planets_in_system":2,"discovery_facility":"Multiple Facilities","host_spectral_type":"K0","host_temperature_k":5661,"orbital_period_days":321.82,"equilibrium_temperature_k":338.35,"argument_of_periastron_deg":283},"designations":[{"catalog":"Exoplanet","designation":"HIP 10090 c"},{"catalog":"Host star","designation":"HIP 10090"}],"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."}