{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T05:02:13.920Z","years_from_j2000":26.68,"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-5078","name":"NGC 5078","class":"spiral_galaxy_sa","category":"galaxy","object_type":"Spiral galaxy Sa","mag":10.64,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":114442499.62566333,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":199.95825000000002,"dec_deg":-27.41038888888889,"epoch_ra_deg":200.32811,"epoch_dec_deg":-27.551582,"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":"Hydra","discovered":"1786","featured":false,"url":"https://spacecatalog.org/object/ngc-5078","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.02,"h_mag":7.46,"j_mag":8.21,"k_mag":7.12,"v_mag":10.64,"redshift":0.007145,"hubble_type":"Sa","wikidata_id":"Q742354","redshift_cmb":0.008142452522790666,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14801133.035540454,14801133.035540454]},"major_axis_arcmin":2.56,"minor_axis_arcmin":0.62,"wikipedia_article":"NGC 5078","position_angle_deg":147,"surface_brightness":22.26,"radial_velocity_km_s":2134},"designations":[{"catalog":"2MASX","designation":"2MASX J13195002-2724362"},{"catalog":"ESO","designation":"ESO 508-048"},{"catalog":"ESO","designation":"ESO 508-48"},{"catalog":"ESO-LV","designation":"ESO-LV 508-0480"},{"catalog":"IRAS","designation":"IRAS 13170-2708"},{"catalog":"IRAS","designation":"IRAS F13170-2708"},{"catalog":"LEDA","designation":"LEDA 46490"},{"catalog":"MCG","designation":"MCG -04-32-001"},{"catalog":"NGC","designation":"NGC 5078"},{"catalog":"PGC","designation":"PGC 46490"}],"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."}