{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T12:41:35.186Z","years_from_j2000":26.669,"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-6071","name":"NGC 6071","class":"elliptical_galaxy_e","category":"galaxy","object_type":"Elliptical galaxy E","mag":14.72,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":358597013.8027673,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":240.5292916666667,"dec_deg":70.41702777777778,"epoch_ra_deg":240.51148,"epoch_dec_deg":70.341463,"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":"Ursa Minor","discovered":"1791","featured":false,"url":"https://spacecatalog.org/object/ngc-6071","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.72,"h_mag":10.85,"j_mag":11.53,"k_mag":10.59,"redshift":0.02521,"hubble_type":"E","wikidata_id":"Q947346","redshift_cmb":0.025191857179236887,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[20287983.2728035,20287983.2728035]},"major_axis_arcmin":0.75,"minor_axis_arcmin":0.56,"position_angle_deg":105,"radial_velocity_km_s":7464},"designations":[{"catalog":"2MASX","designation":"2MASX J16020708+7025018"},{"catalog":"IRAS","designation":"IRAS 16011+7044"},{"catalog":"IRAS","designation":"IRAS F16011+7044"},{"catalog":"LEDA","designation":"LEDA 56674"},{"catalog":"MCG","designation":"MCG +12-15-047"},{"catalog":"NGC","designation":"NGC 6071"},{"catalog":"PGC","designation":"PGC 56674"},{"catalog":"PGC","designation":"PGC 56767"},{"catalog":"UGC","designation":"UGC 10157"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}