{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T04:04:15.550Z","years_from_j2000":26.666,"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-682","name":"NGC 682","class":"elliptical_galaxy_e_s0","category":"galaxy","object_type":"Elliptical galaxy E-S0","mag":13.85,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":250993745.7934854,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":27.269166666666667,"dec_deg":-14.974833333333333,"epoch_ra_deg":27.595361,"epoch_dec_deg":-14.841112,"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":"Cetus","discovered":"1785","featured":false,"url":"https://spacecatalog.org/object/ngc-682","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.85,"h_mag":9.84,"j_mag":10.47,"k_mag":9.44,"redshift":0.018623,"hubble_type":"E-S0","wikidata_id":"Q1038252","redshift_cmb":0.01773015609807027,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[17404614.455213346,17404614.455213346]},"major_axis_arcmin":0.74,"minor_axis_arcmin":0.25,"wikipedia_article":"NGC 682","position_angle_deg":115,"surface_brightness":22.16,"radial_velocity_km_s":5531},"designations":[{"catalog":"2MASX","designation":"2MASX J01490460-1458295"},{"catalog":"LEDA","designation":"LEDA 6663"},{"catalog":"MCG","designation":"MCG -03-05-022"},{"catalog":"NGC","designation":"NGC 682"},{"catalog":"PGC","designation":"PGC 6663"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}