{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T17:42:17.020Z","years_from_j2000":26.654,"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":"m60","name":"M60","class":"elliptical_galaxy_e","category":"galaxy","object_type":"Elliptical galaxy E","mag":8.79,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":62628392.09013624,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":190.91658333333334,"dec_deg":11.552694444444445,"epoch_ra_deg":191.255152,"epoch_dec_deg":11.405595,"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":"Virgo","discovered":"1779","featured":false,"url":"https://spacecatalog.org/object/m60","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":9.79,"h_mag":6,"j_mag":6.67,"k_mag":5.74,"v_mag":8.79,"redshift":0.00339,"hubble_type":"E","wikidata_id":"Q13976","redshift_cmb":0.004468337896677443,"discovered_by":"Johann Gottfried Koehler","ngc_type_code":"G","uncertainties":{"distance_ly":[14250862.460787978,14250862.460787978]},"major_axis_arcmin":6.78,"minor_axis_arcmin":5.45,"wikipedia_article":"Messier 60","position_angle_deg":105,"surface_brightness":22.81,"radial_velocity_km_s":1015},"designations":[{"catalog":"2MASS","designation":"2MASS J12434000+1133099"},{"catalog":"2MASX","designation":"2MASX J12434000+1133093"},{"catalog":"LEDA","designation":"LEDA 42831"},{"catalog":"MCG","designation":"MCG +02-33-002"},{"catalog":"Messier","designation":"M 60"},{"catalog":"NGC","designation":"NGC 4649"},{"catalog":"PGC","designation":"PGC 42831"},{"catalog":"SDSS","designation":"SDSS J124339.97+113309.7"},{"catalog":"UGC","designation":"UGC 7898"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T16:03:54.983Z","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."}