{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T13:15:35.896Z","years_from_j2000":26.672,"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-5772","name":"NGC 5772","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":13.71,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":236053581.09107277,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":222.91199999999998,"dec_deg":40.59916666666667,"epoch_ra_deg":223.17021,"epoch_dec_deg":40.488342,"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":"Boötes","discovered":"1828","featured":false,"url":"https://spacecatalog.org/object/ngc-5772","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.71,"h_mag":9.72,"j_mag":10.49,"k_mag":9.52,"redshift":0.016244,"hubble_type":"Sb","wikidata_id":"Q1122782","redshift_cmb":0.016687724748360333,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[17052861.80417126,17052861.80417126]},"major_axis_arcmin":1.38,"minor_axis_arcmin":0.52,"wikipedia_article":"NGC 5772","position_angle_deg":32,"surface_brightness":22.6,"radial_velocity_km_s":4830},"designations":[{"catalog":"2MASX","designation":"2MASX J14513884+4035572"},{"catalog":"IRAS","designation":"IRAS 14497+4048"},{"catalog":"IRAS","designation":"IRAS F14497+4048"},{"catalog":"LEDA","designation":"LEDA 53067"},{"catalog":"MCG","designation":"MCG +07-31-001"},{"catalog":"NGC","designation":"NGC 5772"},{"catalog":"PGC","designation":"PGC 53067"},{"catalog":"SDSS","designation":"SDSS J145138.88+403556.9"},{"catalog":"SDSS","designation":"SDSS J145138.88+403557.0"},{"catalog":"SDSS","designation":"SDSS J145138.89+403556.9"},{"catalog":"SDSS","designation":"SDSS J145138.89+403557.1"},{"catalog":"UGC","designation":"UGC 9566"}],"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."}