{"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":"2026-09-06T12:55:49.214Z","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":"ugc-9083","name":"UGC 9083","class":"spiral_galaxy_sa_b","category":"galaxy","object_type":"Spiral galaxy SA_B","mag":14.7,"mag_band":"B","abs_mag":-18.048894270497346,"abs_mag_band":"B","distance_ly":115665736.96738063,"distance_method":"luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":212.862045,"dec_deg":50.209049,"epoch_ra_deg":213.111014,"epoch_dec_deg":50.082351,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Boötes","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ugc-9083","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.7,"h_mag":13.822,"j_mag":14.341,"k_mag":13.462,"redshift":0.0072408036204,"hubble_type":"SA_B","redshift_cmb":0.008228947620968,"uncertainties":{"distance_ly":[21324480.23290946,21367011.58433709],"stellar_mass_solar":[93421192.24812624,93421192.24812624]},"major_axis_arcmin":0.90296,"minor_axis_arcmin":0.613832,"morphology_source":"SIMBAD (2019MNRAS.488..590B, quality C)","position_angle_deg":72,"stellar_mass_solar":186842384.49625248},"designations":[{"catalog":"2MASX","designation":"2MASX 14112689+5012325"},{"catalog":"PGC","designation":"PGC 50664"}],"source":{"id":"glade_plus","name":"GLADE+ (Galaxy List for the Advanced Detector Era)","url":"https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/291","license":"VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D)"},"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."}