{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T08:34:55.152Z","years_from_j2000":26.674,"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":"eso208-021","name":"ESO208-021","class":"elliptical_galaxy_e_s0","category":"galaxy","object_type":"Elliptical galaxy E-S0","mag":11.22,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":57116704.52184768,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":113.484375,"dec_deg":-50.44302777777777,"epoch_ra_deg":113.661289,"epoch_dec_deg":-50.500719,"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":"Puppis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/eso208-021","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.17,"h_mag":8.13,"j_mag":8.84,"k_mag":7.88,"v_mag":11.22,"redshift":0.003506,"hubble_type":"E-S0","redshift_cmb":0.004076308559370467,"ngc_type_code":"G","uncertainties":{"distance_ly":[14209115.597865239,14209115.597865239]},"major_axis_arcmin":3.8,"minor_axis_arcmin":2.75,"position_angle_deg":109,"surface_brightness":23.81,"radial_velocity_km_s":1049},"designations":[{"catalog":"2MASX","designation":"2MASX J07335622-5026345"},{"catalog":"ESO-LV","designation":"ESO-LV 2080210"},{"catalog":"OpenNGC","designation":"ESO208-021"},{"catalog":"PGC","designation":"PGC 21293"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","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."}