{"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":"2026-08-31T14:57:10.781Z","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-5036","name":"IC 5036","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":15.96,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":156305516.0251283,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":311.1574166666667,"dec_deg":-57.626777777777775,"epoch_ra_deg":311.68026,"epoch_dec_deg":-57.529646,"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":"Indus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-5036","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.96,"redshift":0.0115,"hubble_type":"Sc","wikidata_id":"Q3680981","redshift_cmb":0.011096263509710047,"ngc_type_code":"G","uncertainties":{"distance_ly":[15438585.494887061,15438585.494887061]},"major_axis_arcmin":0.99,"minor_axis_arcmin":0.3,"position_angle_deg":119,"surface_brightness":23.77,"radial_velocity_km_s":3428},"designations":[{"catalog":"ESO","designation":"ESO 144-002"},{"catalog":"ESO","designation":"ESO 144-2"},{"catalog":"IC","designation":"IC 5036"},{"catalog":"LEDA","designation":"LEDA 65296"},{"catalog":"PGC","designation":"PGC 65296"}],"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."}