{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T02:26:56.005Z","years_from_j2000":26.671,"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":"ngc-2089","name":"NGC 2089","class":"elliptical_galaxy_e_s0","category":"galaxy","object_type":"Elliptical galaxy E-S0","mag":12.94,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":136781833.71542844,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":86.96429166666665,"dec_deg":-17.60238888888889,"epoch_ra_deg":87.26101,"epoch_dec_deg":-17.592562,"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":"Lepus","discovered":"1785","featured":false,"url":"https://spacecatalog.org/object/ngc-2089","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.94,"h_mag":9,"j_mag":9.65,"k_mag":8.81,"redshift":0.00949,"hubble_type":"E-S0","wikidata_id":"Q1046844","redshift_cmb":0.009720309066025834,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15121263.961177096,15121263.961177096]},"major_axis_arcmin":2.2,"minor_axis_arcmin":1.08,"position_angle_deg":42,"surface_brightness":23.45,"radial_velocity_km_s":2831},"designations":[{"catalog":"2MASX","designation":"2MASX J05475142-1736084"},{"catalog":"ESO","designation":"ESO 554-036"},{"catalog":"ESO","designation":"ESO 554-36"},{"catalog":"ESO-LV","designation":"ESO-LV 554-0360"},{"catalog":"IRAS","designation":"IRAS 05456-1738"},{"catalog":"LEDA","designation":"LEDA 17860"},{"catalog":"MCG","designation":"MCG -03-15-016"},{"catalog":"NGC","designation":"NGC 2089"},{"catalog":"PGC","designation":"PGC 17860"}],"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."}