{"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":"2026-08-31T09:42:52.502Z","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":"m85","name":"M85","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":9.05,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":50845279.99732981,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":186.3504583333333,"dec_deg":18.1915,"epoch_ra_deg":186.689628,"epoch_dec_deg":18.042748,"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":"Coma Berenices","discovered":"1781","featured":false,"url":"https://spacecatalog.org/object/m85","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":9.94,"h_mag":6.42,"j_mag":7.06,"k_mag":6.15,"v_mag":9.05,"redshift":0.00257,"hubble_type":"S0-a","wikidata_id":"Q14035","redshift_cmb":0.0036299588814536765,"discovered_by":"Pierre Méchain","ngc_type_code":"G","uncertainties":{"distance_ly":[14165695.431397263,14165695.431397263]},"major_axis_arcmin":6.95,"minor_axis_arcmin":5.35,"wikipedia_article":"Messier 85","position_angle_deg":12,"surface_brightness":22.87,"radial_velocity_km_s":769},"designations":[{"catalog":"2MASX","designation":"2MASX J12252405+1811278"},{"catalog":"LEDA","designation":"LEDA 40515"},{"catalog":"MCG","designation":"MCG +03-32-029"},{"catalog":"Messier","designation":"M 85"},{"catalog":"NGC","designation":"NGC 4382"},{"catalog":"PGC","designation":"PGC 40515"},{"catalog":"SDSS","designation":"SDSS J122524.06+181127.7"},{"catalog":"UGC","designation":"UGC 7508"}],"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."}