{"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":"2026-09-08T08:29:30.806Z","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":"hip-10090-b","name":"HIP 10090 b","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":32.732763,"epoch_dec_deg":-30.619791,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 10090","semi_major_axis_km":578943759.609,"periapsis_km":null,"mass_kg":7.34574220105851e+27,"mass_msun":0.00369428,"constellation":"Fornax","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/hip-10090-b","radius_km":82915.3,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 10090","host_v_mag":8.94,"eccentricity":0.115,"uncertainties":{"mass_kg":[1.1388747598540323e+27,1.2337809898418685e+27],"distance_ly":[0.9540074048214744,0.9611828451312429],"eccentricity":[0.033,0.005],"host_mass_solar":[0.04,0.04],"inclination_deg":[2.2,1.8],"host_radius_solar":[0.078834,0.068518],"host_temperature_k":[72,72],"semi_major_axis_km":[16455765.776999999,28423595.433],"orbital_period_days":[100,120],"argument_of_periastron_deg":[8.6,18]},"host_mass_solar":0.94,"inclination_deg":156.5,"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":2960,"equilibrium_temperature_k":163.17,"argument_of_periastron_deg":104},"designations":[{"catalog":"Exoplanet","designation":"HIP 10090 b"}],"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."}