{"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":"2026-08-31T09:43:54.744Z","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-1899","name":"IC 1899","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":14.39,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":289792257.1083839,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":48.054625,"dec_deg":-25.304916666666667,"epoch_ra_deg":48.346766,"epoch_dec_deg":-25.203569,"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":"Fornax","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-1899","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.39,"h_mag":10.99,"j_mag":11.74,"k_mag":10.7,"redshift":0.020928,"hubble_type":"S0-a","wikidata_id":"Q3693093","redshift_cmb":0.020429907724770047,"ngc_type_code":"G","uncertainties":{"distance_ly":[18378744.993479714,18378744.993479714]},"major_axis_arcmin":1.32,"minor_axis_arcmin":0.39,"position_angle_deg":161,"surface_brightness":23.5,"radial_velocity_km_s":6208},"designations":[{"catalog":"2MASX","designation":"2MASX J03121312-2518175"},{"catalog":"ESO","designation":"ESO 481-008"},{"catalog":"ESO","designation":"ESO 481-8"},{"catalog":"ESO-LV","designation":"ESO-LV 481-0080"},{"catalog":"IC","designation":"IC 1899"},{"catalog":"IRAS","designation":"IRAS 03100-2529"},{"catalog":"LEDA","designation":"LEDA 11930"},{"catalog":"MCG","designation":"MCG -04-08-041"},{"catalog":"PGC","designation":"PGC 11930"}],"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."}