{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T05:58:46.953Z","years_from_j2000":26.682,"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-1313a","name":"NGC 1313A","class":"barred_spiral_galaxy_sbb","category":"galaxy","object_type":"Barred spiral galaxy SBb","mag":14.73,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":264303969.44379613,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":50.02375000000001,"dec_deg":-66.70111111111112,"epoch_ra_deg":50.105716,"epoch_dec_deg":-66.603333,"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":"Reticulum","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ngc-1313a","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.73,"h_mag":10.84,"j_mag":11.59,"k_mag":10.62,"redshift":0.018749,"hubble_type":"SBb","wikidata_id":"Q1042739","redshift_cmb":0.01865752758013195,"ngc_type_code":"G","uncertainties":{"distance_ly":[17729316.055332143,17729316.055332143]},"major_axis_arcmin":1.25,"minor_axis_arcmin":0.33,"position_angle_deg":30,"surface_brightness":23.04,"radial_velocity_km_s":5568},"designations":[{"catalog":"2MASX","designation":"2MASX J03200570-6642042"},{"catalog":"ESO","designation":"ESO 083-001"},{"catalog":"ESO","designation":"ESO 83-1"},{"catalog":"ESO-LV","designation":"ESO-LV 83-0010"},{"catalog":"IRAS","designation":"IRAS 03195-6652"},{"catalog":"IRAS","designation":"IRAS F03195-6652"},{"catalog":"LEDA","designation":"LEDA 12457"},{"catalog":"NGC","designation":"NGC 1313A"},{"catalog":"PGC","designation":"PGC 12457"}],"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."}