{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T20:45:20.710Z","years_from_j2000":26.681,"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":"bd-11-4672-b","name":"BD-11 4672 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":88.60527235241909,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":278.3688659,"dec_deg":-11.6370481,"epoch_ra_deg":278.743594,"epoch_dec_deg":-11.617065,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"BD-11 4672","semi_major_axis_km":353050974.85199994,"periapsis_km":null,"mass_kg":1.2337871737230871e+27,"mass_msun":0.000620489,"constellation":"Scutum","discovered":"2014","featured":false,"url":"https://spacecatalog.org/object/bd-11-4672-b","radius_km":89931.21,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"BD-11 4672","host_v_mag":10.03,"eccentricity":0.05,"uncertainties":{"mass_kg":[1.1388804680520805e+26,9.490670567100671e+25],"distance_ly":[0.11285010668999322,0.11285010668999322],"eccentricity":[0.03,0.05],"host_mass_solar":[0.029,0.031],"host_radius_solar":[0.022,0.02],"host_temperature_k":[110,110],"semi_major_axis_km":[5983914.828,5983914.828],"orbital_period_days":[14,13],"argument_of_periastron_deg":[66.95,92.63]},"host_mass_solar":0.651,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.639,"planets_in_system":2,"discovery_facility":"La Silla Observatory","host_spectral_type":"K7V","host_temperature_k":4550,"orbital_period_days":1634,"periastron_epoch_bjd":2455899,"equilibrium_temperature_k":114.17,"argument_of_periastron_deg":343.88},"designations":[{"catalog":"Exoplanet","designation":"BD-11 4672 b"}],"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."}