{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T06:06:42.375Z","years_from_j2000":26.68,"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-95127-b","name":"HD 95127 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":2206.7055587921654,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":164.8961152,"dec_deg":43.8144094,"epoch_ra_deg":165.27926,"epoch_dec_deg":43.670483,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 95127","semi_major_axis_km":191485274.496,"periapsis_km":null,"mass_kg":2.0177165625656028e+28,"mass_msun":0.0101474,"constellation":"Ursa Major","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/hd-95127-b","radius_km":79088.44,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 95127","host_v_mag":8.15,"eccentricity":0.11,"uncertainties":{"mass_kg":[1.5298960954166282e+28,1.5298960954166282e+28],"distance_ly":[147.1438190250202,147.1438190250202],"eccentricity":[0.1,0.1],"host_mass_solar":[4.16,4.16],"host_radius_solar":[18.22,18.22],"host_temperature_k":[30,30],"semi_major_axis_km":[11967829.656,11967829.656],"orbital_period_days":[5,5],"argument_of_periastron_deg":[40,37]},"host_mass_solar":3.7,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":41.01,"planets_in_system":1,"discovery_facility":"McDonald Observatory","host_spectral_type":"K0","host_temperature_k":4218,"orbital_period_days":482,"periastron_epoch_bjd":2453200.5,"equilibrium_temperature_k":1151.28,"argument_of_periastron_deg":40},"designations":[{"catalog":"Exoplanet","designation":"HD 95127 b"},{"catalog":"Host star","designation":"HD 95127"}],"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."}