{"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":"2026-08-31T22:09:58.354Z","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-5285","name":"IC 5285","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":13.03,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":275317512.3946683,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":346.74558333333334,"dec_deg":22.93647222222222,"epoch_ra_deg":347.074222,"epoch_dec_deg":23.08152,"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":"Pegasus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-5285","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.04,"h_mag":10.22,"j_mag":10.86,"k_mag":9.82,"v_mag":13.03,"redshift":0.020634,"hubble_type":"S0-a","wikidata_id":"Q3679915","redshift_cmb":0.01942393623425831,"ngc_type_code":"G","uncertainties":{"distance_ly":[18005630.22008272,18005630.22008272]},"major_axis_arcmin":1.32,"minor_axis_arcmin":0.74,"position_angle_deg":88,"surface_brightness":23.23,"radial_velocity_km_s":6122},"designations":[{"catalog":"2MASX","designation":"2MASX J23065893+2256113"},{"catalog":"IC","designation":"IC 5285"},{"catalog":"IRAS","designation":"IRAS F23045+2239"},{"catalog":"LEDA","designation":"LEDA 70497"},{"catalog":"MCG","designation":"MCG +04-54-026"},{"catalog":"PGC","designation":"PGC 70497"},{"catalog":"SDSS","designation":"SDSS J230658.93+225611.3"},{"catalog":"UGC","designation":"UGC 12365"}],"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."}