{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.673","julian_year":2026.673,"time":"2026-09-03T22:29:47.548Z","years_from_j2000":26.673,"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-1006","name":"NGC 1006","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":14.05,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":210888350.71952474,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":39.39525,"dec_deg":-11.025,"epoch_ra_deg":39.721213,"epoch_dec_deg":-10.908279,"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":"1876","featured":false,"url":"https://spacecatalog.org/object/ngc-1006","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.05,"redshift":0.01566,"hubble_type":"Sc","wikidata_id":"Q1278290","redshift_cmb":0.01492825038924872,"discovered_by":"Lewis A. Swift, Édouard Stephan","ngc_type_code":"G","uncertainties":{"distance_ly":[16493064.941291539,16493064.941291539]},"major_axis_arcmin":0.86,"minor_axis_arcmin":0.24,"position_angle_deg":1,"surface_brightness":21.85,"radial_velocity_km_s":4657},"designations":[{"catalog":"2MASX","designation":"2MASX J02373487-1101300"},{"catalog":"LEDA","designation":"LEDA 9949"},{"catalog":"MCG","designation":"MCG -02-07-044"},{"catalog":"NGC","designation":"NGC 1006"},{"catalog":"NGC","designation":"NGC 1010"},{"catalog":"PGC","designation":"PGC 9949"}],"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."}