{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T17:14:49.135Z","years_from_j2000":26.686,"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-127195-c","name":"HD 127195 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":276.3089200411604,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":217.8714193,"dec_deg":-47.7292571,"epoch_ra_deg":218.315458,"epoch_dec_deg":-47.848422,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 127195","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":1.2337809898418685e+27,"mass_msun":0.000620486,"constellation":"Lupus","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/hd-127195-c","radius_km":89931.21,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 127195","host_v_mag":7.18,"eccentricity":0.05,"uncertainties":{"mass_kg":[3.7962491995134414e+25,3.7962491995134414e+25],"distance_ly":[1.8714852953386736,1.8714852953386736],"eccentricity":[0.04,0.05],"host_mass_solar":[0.06,0.06],"host_radius_solar":[0.06,0.06],"host_temperature_k":[26,26],"orbital_period_days":[9.67,9.35],"argument_of_periastron_deg":[2.43,1.21]},"host_mass_solar":1.34,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":4.16,"planets_in_system":2,"discovery_facility":"La Silla Observatory","host_temperature_k":4981,"orbital_period_days":836.99,"argument_of_periastron_deg":4.12},"designations":[{"catalog":"Exoplanet","designation":"HD 127195 c"},{"catalog":"Host star","designation":"HD 127195"}],"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."}