{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T10:38:07.845Z","years_from_j2000":26.669,"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-5298","name":"IC 5298","class":"barred_spiral_galaxy_sbc","category":"galaxy","object_type":"Barred spiral galaxy SBc","mag":14.9,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":372514677.41402805,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":349.0029166666667,"dec_deg":25.556694444444446,"epoch_ra_deg":349.332362,"epoch_dec_deg":25.70307,"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":"1899","featured":false,"url":"https://spacecatalog.org/object/ic-5298","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.95,"h_mag":10.89,"j_mag":11.7,"k_mag":10.39,"v_mag":14.9,"redshift":0.027352,"hubble_type":"SBc","wikidata_id":"Q3497489","redshift_cmb":0.02615114906153715,"discovered_by":"Stéphane Javelle","ngc_type_code":"G","uncertainties":{"distance_ly":[20697886.7537435,20697886.7537435]},"major_axis_arcmin":0.79,"minor_axis_arcmin":0.7,"position_angle_deg":161,"surface_brightness":23.22,"radial_velocity_km_s":8088},"designations":[{"catalog":"2MASX","designation":"2MASX J23160070+2533242"},{"catalog":"IC","designation":"IC 5298"},{"catalog":"IRAS","designation":"IRAS 23135+2516"},{"catalog":"MCG","designation":"MCG +04-54-038"},{"catalog":"PGC","designation":"PGC 70877"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}