{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T04:12:23.951Z","years_from_j2000":26.682,"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-63242-b","name":"HIP 63242 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":510.29122232050804,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":194.3824825,"dec_deg":-65.6463263,"epoch_ra_deg":194.805335,"epoch_dec_deg":-65.791652,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HIP 63242","semi_major_axis_km":84522796.94549999,"periapsis_km":null,"mass_kg":1.7424158084353415e+28,"mass_msun":0.00876286,"constellation":"Musca","discovered":"2013","featured":false,"url":"https://spacecatalog.org/object/hip-63242-b","radius_km":79726.25,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HIP 63242","host_v_mag":6.86,"eccentricity":0.23,"uncertainties":{"distance_ly":[2.28146386212862,2.28146386212862],"host_mass_solar":[0.05,0.05],"host_radius_solar":[0.106589,0.177534],"host_temperature_k":[100,100]},"host_mass_solar":1.54,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":10.275655,"planets_in_system":1,"discovery_facility":"Multiple Observatories","host_spectral_type":"G8","host_temperature_k":4830,"orbital_period_days":124.6,"periastron_epoch_bjd":2455376.2,"equilibrium_temperature_k":993.26,"argument_of_periastron_deg":118.2},"designations":[{"catalog":"Exoplanet","designation":"HIP 63242 b"},{"catalog":"Host star","designation":"HIP 63242"}],"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."}