{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-06T00:47:21.797Z","years_from_j2000":26.679,"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-4699","name":"NGC 4699","class":"intermediate_spiral_galaxy_sabb","category":"galaxy","object_type":"Intermediate spiral galaxy SABb","mag":9.53,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":81429864.64983438,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":192.25929166666666,"dec_deg":-8.664861111111112,"epoch_ra_deg":192.608078,"epoch_dec_deg":-8.811394,"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":"1786","featured":false,"url":"https://spacecatalog.org/object/ngc-4699","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":10.38,"h_mag":6.75,"j_mag":7.4,"k_mag":6.5,"v_mag":9.53,"redshift":0.004673,"hubble_type":"SABb","wikidata_id":"Q370551","redshift_cmb":0.005803887665939644,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14418091.00262772,14418091.00262772]},"major_axis_arcmin":3.99,"minor_axis_arcmin":3.02,"wikipedia_article":"NGC 4699","position_angle_deg":35,"surface_brightness":21.92,"radial_velocity_km_s":1398},"designations":[{"catalog":"2MASX","designation":"2MASX J12490218-0839514"},{"catalog":"IRAS","designation":"IRAS 12464-0823"},{"catalog":"IRAS","designation":"IRAS F12464-0823"},{"catalog":"LEDA","designation":"LEDA 43321"},{"catalog":"MCG","designation":"MCG -01-33-013"},{"catalog":"NGC","designation":"NGC 4699"},{"catalog":"PGC","designation":"PGC 43321"},{"catalog":"SDSS","designation":"SDSS J124902.19-083951.8"},{"catalog":"UGCA","designation":"UGCA 301"}],"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."}