{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T05:59:09.108Z","years_from_j2000":26.666,"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":"m64","name":"Black Eye Galaxy","class":"intermediate_spiral_galaxy_saba","category":"galaxy","object_type":"Intermediate spiral galaxy SABa","mag":8.52,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":194.18183333333334,"dec_deg":21.682972222222222,"epoch_ra_deg":194.512031,"epoch_dec_deg":21.5376,"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":"Coma Berenices","discovered":"1779","featured":true,"url":"https://spacecatalog.org/object/m64","radius_km":null,"radius_kind":null,"data_quality":null,"description":"A dark band of dust across its bright core gives this galaxy its name. The gas in its outer regions orbits the opposite way to the inner disk — the fossil of a merger.","properties":{"b_mag":9.27,"h_mag":5.58,"j_mag":6.27,"k_mag":5.33,"v_mag":8.52,"redshift":0.001341,"hubble_type":"SABa","wikidata_id":"Q13983","redshift_cmb":0.002307822883630184,"discovered_by":"Edward Pigott","ngc_type_code":"G","major_axis_arcmin":10.52,"minor_axis_arcmin":5.33,"wikipedia_article":"Black Eye Galaxy","position_angle_deg":114,"surface_brightness":22.68,"radial_velocity_km_s":402},"designations":[{"catalog":"2MASX","designation":"2MASX J12564369+2140575"},{"catalog":"Common name","designation":"Black Eye Galaxy"},{"catalog":"Common name","designation":"Evil Eye Galaxy"},{"catalog":"IRAS","designation":"IRAS 12542+2157"},{"catalog":"IRAS","designation":"IRAS 12543+2157"},{"catalog":"IRAS","designation":"IRAS F12542+2157"},{"catalog":"LEDA","designation":"LEDA 44182"},{"catalog":"MCG","designation":"MCG +04-31-001"},{"catalog":"Messier","designation":"M 64"},{"catalog":"NGC","designation":"NGC 4826"},{"catalog":"PGC","designation":"PGC 44182"},{"catalog":"UGC","designation":"UGC 8062"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}