{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T06:04:07.991Z","years_from_j2000":26.671,"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-3735","name":"NGC 3735","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":12.5,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":130507781.72025926,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":173.98875,"dec_deg":70.53558333333334,"epoch_ra_deg":174.381907,"epoch_dec_deg":70.3871,"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":"Draco","discovered":"1801","featured":false,"url":"https://spacecatalog.org/object/ngc-3735","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.34,"h_mag":8.75,"j_mag":9.54,"k_mag":8.45,"v_mag":12.5,"redshift":0.00901,"hubble_type":"Sc","wikidata_id":"Q1106196","redshift_cmb":0.009277539324580975,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15026604.55118825,15026604.55118825]},"major_axis_arcmin":3.54,"minor_axis_arcmin":0.8,"wikipedia_article":"NGC 3735","position_angle_deg":130,"surface_brightness":22.62,"radial_velocity_km_s":2689},"designations":[{"catalog":"2MASX","designation":"2MASX J11355732+7032081"},{"catalog":"IRAS","designation":"IRAS 11330+7048"},{"catalog":"IRAS","designation":"IRAS F11330+7048"},{"catalog":"LEDA","designation":"LEDA 35869"},{"catalog":"MCG","designation":"MCG +12-11-036"},{"catalog":"NGC","designation":"NGC 3735"},{"catalog":"PGC","designation":"PGC 35869"},{"catalog":"SDSS","designation":"SDSS J113557.30+703209.0"},{"catalog":"UGC","designation":"UGC 6567"}],"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."}