{"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":"2026-09-03T16:02:45.342Z","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-2926","name":"NGC 2926","class":"barred_spiral_galaxy_sbbc","category":"galaxy","object_type":"Barred spiral galaxy SBbc","mag":14.44,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":217839363.89951536,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":144.37920833333334,"dec_deg":32.84141666666667,"epoch_ra_deg":144.780267,"epoch_dec_deg":32.720921,"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":"Leo","discovered":"1886","featured":false,"url":"https://spacecatalog.org/object/ngc-2926","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.44,"h_mag":11.44,"j_mag":12.04,"k_mag":11.05,"redshift":0.01454,"hubble_type":"SBbc","wikidata_id":"Q1101900","redshift_cmb":0.015414697292779778,"discovered_by":"Johann Palisa","ngc_type_code":"G","uncertainties":{"distance_ly":[16643403.052302696,16643403.052302696]},"major_axis_arcmin":0.83,"minor_axis_arcmin":0.74,"position_angle_deg":120,"surface_brightness":22.74,"radial_velocity_km_s":4327},"designations":[{"catalog":"2MASX","designation":"2MASX J09373100+3250286"},{"catalog":"IRAS","designation":"IRAS 09345+3304"},{"catalog":"LEDA","designation":"LEDA 27400"},{"catalog":"MCG","designation":"MCG +06-21-060"},{"catalog":"NGC","designation":"NGC 2926"},{"catalog":"PGC","designation":"PGC 27400"},{"catalog":"SDSS","designation":"SDSS J093731.00+325029.0"},{"catalog":"SDSS","designation":"SDSS J093731.01+325029.1"},{"catalog":"UGC","designation":"UGC 5125"}],"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."}