{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T14:10:32.624Z","years_from_j2000":26.678,"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-28192-b","name":"HD 28192 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":162.44642395473437,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":66.7032517,"dec_deg":-1.7244842,"epoch_ra_deg":67.043368,"epoch_dec_deg":-1.663647,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 28192","semi_major_axis_km":17652548.742599998,"periapsis_km":null,"mass_kg":5.960111243355546e+26,"mass_msun":0.000299743,"constellation":"Eridanus","discovered":"2022","featured":false,"url":"https://spacecatalog.org/object/hd-28192-b","radius_km":77812.82,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 28192","host_v_mag":8.06,"eccentricity":0.104,"uncertainties":{"mass_kg":[5.884186261037484e+25,4.555499040610563e+25],"distance_ly":[0.4595543362028915,0.4618374308469087],"eccentricity":[0.023,0.042],"host_mass_solar":[0.135,0.135],"host_radius_solar":[0.054817,0.042857],"host_temperature_k":[96.45,140.84],"semi_major_axis_km":[747989.3535,747989.3535],"orbital_period_days":[0.00152,0.00214],"argument_of_periastron_deg":[35.475,30.955]},"host_mass_solar":1.08,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":1.07094,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_temperature_k":5919.87,"orbital_period_days":14.23283,"periastron_epoch_bjd":2453007.832,"equilibrium_temperature_k":859.98,"argument_of_periastron_deg":279.469},"designations":[{"catalog":"Exoplanet","designation":"HD 28192 b"},{"catalog":"Host star","designation":"HD 28192"}],"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."}