{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T23:50:54.704Z","years_from_j2000":26.679,"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-95872-b","name":"HD 95872 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":235.5485052051435,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":165.8658796,"dec_deg":-22.0943303,"epoch_ra_deg":166.194445,"epoch_dec_deg":-22.238901,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 95872","semi_major_axis_km":770429034.105,"periapsis_km":null,"mass_kg":7.099021584191301e+27,"mass_msun":0.0035702,"constellation":"Crater","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/hd-95872-b","radius_km":82915.3,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 95872","host_v_mag":9.955,"eccentricity":0.06,"uncertainties":{"mass_kg":[1.7652647254807247e+27,1.7652647254807247e+27],"distance_ly":[0.5818629778466703,0.5844722288684042],"eccentricity":[0.04,0.04],"host_mass_solar":[0.25,0.25],"host_radius_solar":[0.04,0.04],"host_temperature_k":[100,100],"semi_major_axis_km":[23935659.312,23935659.312],"orbital_period_days":[170,170],"argument_of_periastron_deg":[67,67]},"host_mass_solar":0.7,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.84,"planets_in_system":1,"discovery_facility":"Multiple Facilities","host_spectral_type":"K0 V","host_temperature_k":5312,"orbital_period_days":4375,"periastron_epoch_bjd":2449869,"equilibrium_temperature_k":103.45,"argument_of_periastron_deg":17},"designations":[{"catalog":"Exoplanet","designation":"HD 95872 b"},{"catalog":"Host star","designation":"HD 95872"}],"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."}