{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-06T01:31:54.164Z","years_from_j2000":26.679,"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-3283","name":"NGC 3283","class":"lenticular_galaxy_s0","category":"galaxy","object_type":"Lenticular galaxy S0","mag":11.74,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":146537042.96945933,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":157.79833333333335,"dec_deg":-46.25127777777778,"epoch_ra_deg":158.081477,"epoch_dec_deg":-46.389017,"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":"Vela","discovered":"1837","featured":false,"url":"https://spacecatalog.org/object/ngc-3283","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.57,"h_mag":8.24,"j_mag":9.01,"k_mag":7.95,"v_mag":11.74,"redshift":0.009458,"hubble_type":"S0","wikidata_id":"Q1104039","redshift_cmb":0.01040817055934573,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15275582.730936669,15275582.730936669]},"major_axis_arcmin":2.86,"minor_axis_arcmin":2.07,"position_angle_deg":166,"surface_brightness":23.58,"radial_velocity_km_s":2822},"designations":[{"catalog":"2MASX","designation":"2MASX J10311160-4615043"},{"catalog":"ESO","designation":"ESO 263-048"},{"catalog":"ESO","designation":"ESO 263-48"},{"catalog":"ESO-LV","designation":"ESO-LV 263-0480"},{"catalog":"IRAS","designation":"IRAS 10290-4559"},{"catalog":"LEDA","designation":"LEDA 31035"},{"catalog":"NGC","designation":"NGC 3283"},{"catalog":"PGC","designation":"PGC 31035"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"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."}