{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.667","julian_year":2026.667,"time":"2026-09-01T13:43:43.577Z","years_from_j2000":26.667,"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-2008","name":"NGC 2008","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":14,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":495734279.1211899,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":83.765875,"dec_deg":-50.96677777777778,"epoch_ra_deg":83.926936,"epoch_dec_deg":-50.948455,"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":"Pictor","discovered":"1834","featured":false,"url":"https://spacecatalog.org/object/ngc-2008","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.65,"h_mag":11.17,"j_mag":11.88,"k_mag":10.86,"v_mag":14,"redshift":0.034387,"hubble_type":"Sc","wikidata_id":"Q1046435","redshift_cmb":0.03458778127115125,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[24587605.93631356,24587605.93631356]},"major_axis_arcmin":1.23,"minor_axis_arcmin":0.62,"wikipedia_article":"NGC 2008","position_angle_deg":95,"surface_brightness":23.27,"radial_velocity_km_s":10132},"designations":[{"catalog":"2MASX","designation":"2MASX J05350381-5058002"},{"catalog":"ESO","designation":"ESO 204-020"},{"catalog":"ESO","designation":"ESO 204-20"},{"catalog":"ESO-LV","designation":"ESO-LV 204-0200"},{"catalog":"IRAS","designation":"IRAS 05338-5059"},{"catalog":"LEDA","designation":"LEDA 17480"},{"catalog":"NGC","designation":"NGC 2008"},{"catalog":"PGC","designation":"PGC 17480"}],"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."}