{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T07:56:31.666Z","years_from_j2000":26.685,"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-7001","name":"NGC 7001","class":"intermediate_spiral_galaxy_saba","category":"galaxy","object_type":"Intermediate spiral galaxy SABa","mag":12.93,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":322174488.49059397,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":315.28229166666665,"dec_deg":-0.19516666666666665,"epoch_ra_deg":315.626846,"epoch_dec_deg":-0.090173,"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":"Aquarius","discovered":"1827","featured":false,"url":"https://spacecatalog.org/object/ngc-7001","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.79,"h_mag":9.99,"j_mag":10.76,"k_mag":9.73,"v_mag":12.93,"redshift":0.02373,"hubble_type":"SABa","wikidata_id":"Q1149005","redshift_cmb":0.022675134833485933,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[19251228.810719777,19251228.810719777]},"major_axis_arcmin":1.38,"minor_axis_arcmin":1.03,"wikipedia_article":"NGC 7001","position_angle_deg":169,"surface_brightness":23.03,"radial_velocity_km_s":7030},"designations":[{"catalog":"2MASX","designation":"2MASX J21010774-0011426"},{"catalog":"IRAS","designation":"IRAS F20585-0023"},{"catalog":"LEDA","designation":"LEDA 65905"},{"catalog":"MCG","designation":"MCG +00-53-016"},{"catalog":"NGC","designation":"NGC 7001"},{"catalog":"PGC","designation":"PGC 65905"},{"catalog":"SDSS","designation":"SDSS J210107.74-001142.6"},{"catalog":"SDSS","designation":"SDSS J210107.75-001142.6"},{"catalog":"UGC","designation":"UGC 11663"}],"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."}