{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T09:59:20.471Z","years_from_j2000":26.68,"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":"ngc7475-ned02","name":"NGC7475 NED02","class":"elliptical_galaxy","category":"galaxy","object_type":"Elliptical galaxy","mag":15.1,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":511617302.10224146,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":346.0484583333333,"dec_deg":20.08502777777778,"epoch_ra_deg":346.37876,"epoch_dec_deg":20.229729,"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":"Pegasus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ngc7475-ned02","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.1,"redshift":0.036913,"hubble_type":"-4.2","redshift_cmb":0.035668023485192046,"ngc_type_code":"G","uncertainties":{"distance_ly":[25116514.916544534,25116514.916544534]},"major_axis_arcmin":0.45,"minor_axis_arcmin":0.45,"morphology_source":"SIMBAD (2001ApJ...560..566K, quality D)","position_angle_deg":1,"radial_velocity_km_s":10862},"designations":[{"catalog":"MCG","designation":"MCG +03-58-028"},{"catalog":"OpenNGC","designation":"NGC7475 NED02"},{"catalog":"PGC","designation":"PGC 70382"},{"catalog":"UGC","designation":"UGC 12337 NED02"}],"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."}