{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T04:28:03.440Z","years_from_j2000":26.669,"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":"ngc-3333","name":"NGC 3333","class":"spiral_galaxy_sbc","category":"galaxy","object_type":"Spiral galaxy Sbc","mag":13.12,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":219770982.8694132,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":159.957625,"dec_deg":-36.03616666666667,"epoch_ra_deg":160.262953,"epoch_dec_deg":-36.175934,"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":"Antlia","discovered":"1835","featured":false,"url":"https://spacecatalog.org/object/ngc-3333","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.86,"h_mag":10.03,"j_mag":10.81,"k_mag":9.76,"v_mag":13.12,"redshift":0.014466,"hubble_type":"Sbc","wikidata_id":"Q1104269","redshift_cmb":0.015549814534599582,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[16685773.931694364,16685773.931694364]},"major_axis_arcmin":1.44,"minor_axis_arcmin":0.41,"position_angle_deg":159,"surface_brightness":22.41,"radial_velocity_km_s":4306},"designations":[{"catalog":"2MASX","designation":"2MASX J10394981-3602102"},{"catalog":"ESO","designation":"ESO 376-002"},{"catalog":"ESO","designation":"ESO 376-2"},{"catalog":"ESO-LV","designation":"ESO-LV 376-0020"},{"catalog":"IRAS","designation":"IRAS 10375-3546"},{"catalog":"LEDA","designation":"LEDA 31723"},{"catalog":"MCG","designation":"MCG -06-24-001"},{"catalog":"NGC","designation":"NGC 3333"},{"catalog":"PGC","designation":"PGC 31723"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}