{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T18:13:00.238Z","years_from_j2000":26.684,"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-6810","name":"NGC 6810","class":"spiral_galaxy_sab","category":"galaxy","object_type":"Spiral galaxy Sab","mag":11.42,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":85377519.87621997,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":295.8927083333333,"dec_deg":-58.65558333333333,"epoch_ra_deg":296.458772,"epoch_dec_deg":-58.591666,"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":"Pavo","discovered":"1834","featured":false,"url":"https://spacecatalog.org/object/ngc-6810","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.3,"h_mag":7.98,"j_mag":8.81,"k_mag":7.68,"v_mag":11.42,"redshift":0.00635,"hubble_type":"Sab","wikidata_id":"Q1147821","redshift_cmb":0.006083965916163558,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14457995.230045475,14457995.230045475]},"major_axis_arcmin":3.79,"minor_axis_arcmin":1.05,"wikipedia_article":"NGC 6810","position_angle_deg":175,"surface_brightness":23.18,"radial_velocity_km_s":1899},"designations":[{"catalog":"2MASX","designation":"2MASX J19433370-5839027"},{"catalog":"2MASX","designation":"2MASX J19433447-5839207"},{"catalog":"ESO","designation":"ESO 142-035"},{"catalog":"ESO","designation":"ESO 142-35"},{"catalog":"ESO-LV","designation":"ESO-LV 142-0350"},{"catalog":"IRAS","designation":"IRAS 19393-5846"},{"catalog":"IRAS","designation":"IRAS F19393-5846"},{"catalog":"LEDA","designation":"LEDA 63571"},{"catalog":"NGC","designation":"NGC 6810"},{"catalog":"PGC","designation":"PGC 63571"}],"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."}