{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T14:57:47.590Z","years_from_j2000":26.675,"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-1572","name":"NGC 1572","class":"barred_spiral_galaxy_sba","category":"galaxy","object_type":"Barred spiral galaxy SBa","mag":12.47,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":286317315.451958,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":65.678375,"dec_deg":-40.60091666666667,"epoch_ra_deg":65.90653,"epoch_dec_deg":-40.537521,"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":"Caelum","discovered":"1835","featured":false,"url":"https://spacecatalog.org/object/ngc-1572","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.29,"h_mag":9.67,"j_mag":10.39,"k_mag":9.3,"v_mag":12.47,"redshift":0.020291,"hubble_type":"SBa","wikidata_id":"Q1044058","redshift_cmb":0.020188538629690722,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[18288171.062991153,18288171.062991153]},"major_axis_arcmin":1.37,"minor_axis_arcmin":0.93,"wikipedia_article":"NGC 1572","position_angle_deg":160,"surface_brightness":22.53,"radial_velocity_km_s":6021},"designations":[{"catalog":"2MASX","designation":"2MASX J04224281-4036034"},{"catalog":"ESO","designation":"ESO 303-014"},{"catalog":"ESO","designation":"ESO 303-14"},{"catalog":"ESO-LV","designation":"ESO-LV 303-0140"},{"catalog":"IRAS","designation":"IRAS 04210-4042"},{"catalog":"IRAS","designation":"IRAS F04210-4042"},{"catalog":"LEDA","designation":"LEDA 14993"},{"catalog":"MCG","designation":"MCG -07-10-003"},{"catalog":"NGC","designation":"NGC 1572"},{"catalog":"PGC","designation":"PGC 14993"}],"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."}