{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T14:23:31.301Z","years_from_j2000":26.683,"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-7572","name":"NGC 7572","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":14.02,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":349.20987499999995,"dec_deg":18.483166666666666,"epoch_ra_deg":349.544118,"epoch_dec_deg":18.62976,"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":"Pegasus","discovered":"1864","featured":false,"url":"https://spacecatalog.org/object/ngc-7572","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.14,"h_mag":10.91,"j_mag":11.68,"k_mag":10.58,"v_mag":14.02,"hubble_type":"S0-a","wikidata_id":"Q1168115","discovered_by":"Albert Marth","ngc_type_code":"G","major_axis_arcmin":1.01,"minor_axis_arcmin":0.5,"wikipedia_article":"NGC 7572","position_angle_deg":162,"surface_brightness":23.8},"designations":[{"catalog":"2MASX","designation":"2MASX J23165013+1829093"},{"catalog":"2MASX","designation":"2MASX J23165036+1828594"},{"catalog":"LEDA","designation":"LEDA 70919"},{"catalog":"MCG","designation":"MCG +03-59-023"},{"catalog":"NGC","designation":"NGC 7572"},{"catalog":"PGC","designation":"PGC 70919"}],"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."}