{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T14:39:34.534Z","years_from_j2000":26.678,"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-5235","name":"NGC 5235","class":"barred_spiral_galaxy_sbb","category":"galaxy","object_type":"Barred spiral galaxy SBb","mag":15.06,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":326253804.21020895,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":204.005875,"dec_deg":6.585361111111111,"epoch_ra_deg":204.343276,"epoch_dec_deg":6.448001,"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":"Virgo","discovered":"1784","featured":false,"url":"https://spacecatalog.org/object/ngc-5235","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.06,"h_mag":10.84,"j_mag":11.52,"k_mag":10.67,"redshift":0.02197,"hubble_type":"SBb","wikidata_id":"Q1117950","redshift_cmb":0.02295745999637755,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[19364580.199014515,19364580.199014515]},"major_axis_arcmin":1.31,"minor_axis_arcmin":0.57,"wikipedia_article":"NGC 5235","position_angle_deg":115,"surface_brightness":23.78,"radial_velocity_km_s":6514},"designations":[{"catalog":"2MASX","designation":"2MASX J13360139+0635076"},{"catalog":"IRAS","designation":"IRAS 13335+0650"},{"catalog":"LEDA","designation":"LEDA 47984"},{"catalog":"MCG","designation":"MCG +01-35-012"},{"catalog":"NGC","designation":"NGC 5235"},{"catalog":"PGC","designation":"PGC 47984"},{"catalog":"SDSS","designation":"SDSS J133601.40+063507.2"},{"catalog":"UGC","designation":"UGC 8582"}],"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."}