{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T20:08:20.770Z","years_from_j2000":26.67,"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":"ic-1605","name":"IC 1605","class":"barred_spiral_galaxy_sbbc","category":"galaxy","object_type":"Barred spiral galaxy SBbc","mag":12.94,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":342862788.42284405,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":14.406833333333333,"dec_deg":-48.90266666666667,"epoch_ra_deg":14.710438,"epoch_dec_deg":-48.757409,"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":"Phoenix","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-1605","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.72,"h_mag":10.55,"j_mag":11.17,"k_mag":10.21,"v_mag":12.94,"redshift":0.024729,"hubble_type":"SBbc","wikidata_id":"Q3693710","redshift_cmb":0.02410576893354066,"ngc_type_code":"G","uncertainties":{"distance_ly":[19833454.42470492,19833454.42470492]},"major_axis_arcmin":1.68,"minor_axis_arcmin":1.35,"position_angle_deg":143,"surface_brightness":23.41,"radial_velocity_km_s":7322},"designations":[{"catalog":"2MASX","designation":"2MASX J00573759-4854095"},{"catalog":"ESO","designation":"ESO 195-019"},{"catalog":"ESO","designation":"ESO 195-19"},{"catalog":"ESO-LV","designation":"ESO-LV 195-0190"},{"catalog":"IC","designation":"IC 1605"},{"catalog":"IRAS","designation":"IRAS 00553-4910"},{"catalog":"IRAS","designation":"IRAS F00553-4910"},{"catalog":"LEDA","designation":"LEDA 3436"},{"catalog":"PGC","designation":"PGC 3436"}],"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."}