{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.664","julian_year":2026.664,"time":"2026-08-31T12:01:23.615Z","years_from_j2000":26.664,"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":"ic-34","name":"IC 34","class":"barred_spiral_galaxy_sba","category":"galaxy","object_type":"Barred spiral galaxy SBa","mag":13.77,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":233593406.0923044,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":8.90175,"dec_deg":9.12425,"epoch_ra_deg":9.249164,"epoch_dec_deg":9.2722,"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":"Pisces","discovered":"1867","featured":false,"url":"https://spacecatalog.org/object/ic-34","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.77,"h_mag":9.65,"j_mag":10.36,"k_mag":9.42,"redshift":0.017689,"hubble_type":"SBa","wikidata_id":"Q3715609","redshift_cmb":0.016515916781829842,"discovered_by":"Truman Henry Safford","ngc_type_code":"G","uncertainties":{"distance_ly":[16996283.66419226,16996283.66419226]},"major_axis_arcmin":2.81,"minor_axis_arcmin":1.05,"position_angle_deg":156,"surface_brightness":24.32,"radial_velocity_km_s":5256},"designations":[{"catalog":"2MASX","designation":"2MASX J00353642+0907272"},{"catalog":"IC","designation":"IC 34"},{"catalog":"LEDA","designation":"LEDA 2134"},{"catalog":"MCG","designation":"MCG +01-02-032"},{"catalog":"PGC","designation":"PGC 2134"},{"catalog":"UGC","designation":"UGC 351"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}