{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.667","julian_year":2026.667,"time":"2026-09-01T11:21:06.434Z","years_from_j2000":26.667,"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-1574","name":"IC 1574","class":"irregular_galaxy_ib","category":"galaxy","object_type":"Irregular galaxy IB","mag":13.86,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":10.765916666666666,"dec_deg":-22.24688888888889,"epoch_ra_deg":11.099274,"epoch_dec_deg":-22.099701,"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":"Cetus","discovered":"1898","featured":false,"url":"https://spacecatalog.org/object/ic-1574","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.47,"v_mag":13.86,"redshift":0.001204,"hubble_type":"IB","wikidata_id":"Q3497461","redshift_cmb":0.0002146354243637294,"discovered_by":"DeLisle Stewart","ngc_type_code":"G","major_axis_arcmin":1.83,"minor_axis_arcmin":0.7,"wikipedia_article":"IC 1574","position_angle_deg":176,"surface_brightness":23.67,"radial_velocity_km_s":361},"designations":[{"catalog":"ESO","designation":"ESO 474-018"},{"catalog":"ESO","designation":"ESO 474-18"},{"catalog":"ESO-LV","designation":"ESO-LV 474-0180"},{"catalog":"IC","designation":"IC 1574"},{"catalog":"LEDA","designation":"LEDA 2578"},{"catalog":"MCG","designation":"MCG -04-02-043"},{"catalog":"PGC","designation":"PGC 2578"},{"catalog":"UGCA","designation":"UGCA 9"}],"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."}