{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T13:16:09.383Z","years_from_j2000":26.67,"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-926","name":"NGC 926","class":"spiral_galaxy_sbc","category":"galaxy","object_type":"Spiral galaxy Sbc","mag":13.25,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":290709451.7657721,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":36.52795833333334,"dec_deg":-0.33194444444444443,"epoch_ra_deg":36.871557,"epoch_dec_deg":-0.210722,"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-926","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.02,"h_mag":10.41,"j_mag":11.06,"k_mag":10.12,"v_mag":13.25,"redshift":0.02132,"hubble_type":"Sbc","wikidata_id":"Q1040250","redshift_cmb":0.020493601902559222,"discovered_by":"Wilhelm Tempel","ngc_type_code":"G","uncertainties":{"distance_ly":[18402754.720839173,18402754.720839173]},"major_axis_arcmin":1.75,"minor_axis_arcmin":0.78,"position_angle_deg":39,"surface_brightness":23.36,"radial_velocity_km_s":6323},"designations":[{"catalog":"2MASX","designation":"2MASX J02260670-0019552"},{"catalog":"IRAS","designation":"IRAS 02235-0033"},{"catalog":"IRAS","designation":"IRAS F02235-0033"},{"catalog":"LEDA","designation":"LEDA 9256"},{"catalog":"MCG","designation":"MCG +00-07-011"},{"catalog":"NGC","designation":"NGC 926"},{"catalog":"PGC","designation":"PGC 9256"},{"catalog":"SDSS","designation":"SDSS J022606.70-001954.9"},{"catalog":"SDSS","designation":"SDSS J022606.71-001954.9"},{"catalog":"SDSS","designation":"SDSS J022606.71-001955.0"},{"catalog":"UGC","designation":"UGC 1901"}],"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."}