{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T07:09:11.034Z","years_from_j2000":26.669,"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-6935","name":"NGC 6935","class":"intermediate_spiral_galaxy_saba","category":"galaxy","object_type":"Intermediate spiral galaxy SABa","mag":12,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":210766547.8311626,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":309.58425,"dec_deg":-52.11044444444445,"epoch_ra_deg":310.077404,"epoch_dec_deg":-52.016477,"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":"Indus","discovered":"1834","featured":false,"url":"https://spacecatalog.org/object/ngc-6935","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.82,"h_mag":9.07,"j_mag":9.81,"k_mag":8.88,"v_mag":12,"redshift":0.015399,"hubble_type":"SABa","wikidata_id":"Q1148642","redshift_cmb":0.014919723262625917,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[16490460.706148077,16490460.706148077]},"major_axis_arcmin":2.18,"minor_axis_arcmin":1.91,"position_angle_deg":14,"surface_brightness":23.19,"radial_velocity_km_s":4581},"designations":[{"catalog":"2MASX","designation":"2MASX J20382024-5206374"},{"catalog":"ESO","designation":"ESO 234-059"},{"catalog":"ESO","designation":"ESO 234-59"},{"catalog":"ESO-LV","designation":"ESO-LV 234-0590"},{"catalog":"IRAS","designation":"IRAS 20346-5217"},{"catalog":"LEDA","designation":"LEDA 65112"},{"catalog":"NGC","designation":"NGC 6935"},{"catalog":"PGC","designation":"PGC 65112"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}