{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T19:39:45.347Z","years_from_j2000":26.676,"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-3200","name":"NGC 3200","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":12.1,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":182948833.8430783,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":154.65229166666668,"dec_deg":-17.982527777777776,"epoch_ra_deg":154.974996,"epoch_dec_deg":-18.116857,"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":"Hydra","discovered":"1882","featured":false,"url":"https://spacecatalog.org/object/ngc-3200","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.69,"h_mag":9.06,"j_mag":9.92,"k_mag":8.82,"v_mag":12.1,"redshift":0.011776,"hubble_type":"Sc","wikidata_id":"Q1103497","redshift_cmb":0.012969464923630936,"discovered_by":"Edward S. Holden","ngc_type_code":"G","uncertainties":{"distance_ly":[15924146.519884262,15924146.519884262]},"major_axis_arcmin":4.07,"minor_axis_arcmin":1.14,"wikipedia_article":"NGC 3200","position_angle_deg":168,"surface_brightness":23.48,"radial_velocity_km_s":3510},"designations":[{"catalog":"2MASX","designation":"2MASX J10183654-1758571"},{"catalog":"ESO","designation":"ESO 567-045"},{"catalog":"ESO","designation":"ESO 567-45"},{"catalog":"ESO-LV","designation":"ESO-LV 567-0450"},{"catalog":"LEDA","designation":"LEDA 30108"},{"catalog":"MCG","designation":"MCG -03-26-037"},{"catalog":"NGC","designation":"NGC 3200"},{"catalog":"PGC","designation":"PGC 30108"},{"catalog":"UGCA","designation":"UGCA 210"}],"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."}