{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T04:52:15.401Z","years_from_j2000":26.666,"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":"wispit-2-b","name":"WISPIT 2 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":440.00778448632707,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":290.8209991,"dec_deg":-7.6820823,"epoch_ra_deg":291.183846,"epoch_dec_deg":-7.630679,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"WISPIT 2","semi_major_axis_km":8527078629.9,"periapsis_km":null,"mass_kg":9.205904308820096e+27,"mass_msun":0.00462978,"constellation":"Aquila","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/wispit-2-b","radius_km":114387.199684272,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"WISPIT 2","host_v_mag":11.598,"uncertainties":{"mass_kg":[1.1009122678588978e+27,1.7842371237713173e+27],"distance_ly":[7.472242613490591,7.729906151886819],"host_mass_solar":[0.17,0.06],"host_radius_solar":[0.004,0.004],"host_temperature_k":[50,50]},"host_mass_solar":1.08,"stars_in_system":1,"discovery_method":"Imaging","host_radius_solar":1.418,"planets_in_system":2,"discovery_facility":"Paranal Observatory","host_temperature_k":4400,"equilibrium_temperature_k":33.46},"designations":[{"catalog":"Exoplanet","designation":"WISPIT 2 b"},{"catalog":"Host star","designation":"WISPIT 2"}],"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":"2026-08-30T09:56:50.739Z","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."}