{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.665","julian_year":2026.665,"time":"2026-08-31T20:10:43.810Z","years_from_j2000":26.665,"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-1970","name":"IC 1970","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":12.44,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":54998647.15702865,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":54.13133333333334,"dec_deg":-43.956833333333336,"epoch_ra_deg":54.359843,"epoch_dec_deg":-43.86762,"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":"Horologium","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-1970","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.93,"h_mag":9.4,"j_mag":10.17,"k_mag":9.08,"v_mag":12.44,"redshift":0.004179,"hubble_type":"Sb","wikidata_id":"Q3692898","redshift_cmb":0.003925595906549839,"ngc_type_code":"G","uncertainties":{"distance_ly":[14193963.525349941,14193963.525349941]},"major_axis_arcmin":2.99,"minor_axis_arcmin":0.76,"position_angle_deg":75,"surface_brightness":23.14,"radial_velocity_km_s":1250},"designations":[{"catalog":"2MASX","designation":"2MASX J03363152-4357246"},{"catalog":"ESO","designation":"ESO 249-007"},{"catalog":"ESO","designation":"ESO 249-7"},{"catalog":"ESO-LV","designation":"ESO-LV 249-0070"},{"catalog":"IC","designation":"IC 1970"},{"catalog":"IRAS","designation":"IRAS 03348-4407"},{"catalog":"IRAS","designation":"IRAS F03348-4407"},{"catalog":"LEDA","designation":"LEDA 13322"},{"catalog":"MCG","designation":"MCG -07-08-003"},{"catalog":"PGC","designation":"PGC 13322"}],"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."}