{"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":"2026-09-03T01:53:35.153Z","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-5482","name":"NGC 5482","class":"lenticular_galaxy_s0","category":"galaxy","object_type":"Lenticular galaxy S0","mag":14,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":349647508.44347864,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":212.12791666666666,"dec_deg":8.931916666666666,"epoch_ra_deg":212.459791,"epoch_dec_deg":8.804328,"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":"Boötes","discovered":"1784","featured":false,"url":"https://spacecatalog.org/object/ngc-5482","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14,"h_mag":10.02,"j_mag":10.7,"k_mag":9.73,"redshift":0.02371,"hubble_type":"S0","wikidata_id":"Q1120201","redshift_cmb":0.02457430582445963,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[20028257.240747385,20028257.240747385]},"major_axis_arcmin":1.17,"minor_axis_arcmin":0.81,"position_angle_deg":88,"surface_brightness":23.03,"radial_velocity_km_s":7024},"designations":[{"catalog":"2MASX","designation":"2MASX J14083072+0855548"},{"catalog":"LEDA","designation":"LEDA 50459"},{"catalog":"MCG","designation":"MCG +02-36-043"},{"catalog":"NGC","designation":"NGC 5482"},{"catalog":"PGC","designation":"PGC 50459"},{"catalog":"SDSS","designation":"SDSS J140830.69+085554.8"},{"catalog":"SDSS","designation":"SDSS J140830.70+085554.9"},{"catalog":"UGC","designation":"UGC 9038"}],"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."}