{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-05T01:12:17.032Z","years_from_j2000":26.676,"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":"hd-96992-b","name":"HD 96992 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1291.8467039880315,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":167.5966158,"dec_deg":43.9189897,"epoch_ra_deg":167.973279,"epoch_dec_deg":43.773335,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 96992","semi_major_axis_km":185501359.66799998,"periapsis_km":null,"mass_kg":2.1638728892989527e+27,"mass_msun":0.00108824,"constellation":"Ursa Major","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hd-96992-b","radius_km":87379.97,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 96992","host_v_mag":8.57,"eccentricity":0.41,"uncertainties":{"mass_kg":[5.8842157516024155e+26,5.8842157516024155e+26],"distance_ly":[48.78157863320473,48.78157863320473],"eccentricity":[0.12,0.24],"host_mass_solar":[0.09,0.09],"host_radius_solar":[1.1,1.1],"host_temperature_k":[10,10],"semi_major_axis_km":[7479893.535,7479893.535],"orbital_period_days":[4,4],"argument_of_periastron_deg":[31,24]},"host_mass_solar":0.96,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":7.43,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_spectral_type":"K0","host_temperature_k":4725,"orbital_period_days":514,"periastron_epoch_bjd":2453620.5,"equilibrium_temperature_k":557.72,"argument_of_periastron_deg":149},"designations":[{"catalog":"Exoplanet","designation":"HD 96992 b"},{"catalog":"Host star","designation":"HD 96992"}],"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."}