{"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":"2026-09-03T07:56:10.384Z","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-7563","name":"NGC 7563","class":"spiral_galaxy_sa","category":"galaxy","object_type":"Spiral galaxy Sa","mag":12.83,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":184614171.34963626,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":348.9830416666667,"dec_deg":13.196111111111112,"epoch_ra_deg":349.319917,"epoch_dec_deg":13.342494,"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":"1784","featured":false,"url":"https://spacecatalog.org/object/ngc-7563","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.89,"h_mag":9.71,"j_mag":10.44,"k_mag":9.45,"v_mag":12.83,"redshift":0.01433,"hubble_type":"Sa","wikidata_id":"Q1168068","redshift_cmb":0.013086377090670398,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15956401.821007155,15956401.821007155]},"major_axis_arcmin":1.53,"minor_axis_arcmin":0.92,"position_angle_deg":143,"surface_brightness":23.31,"radial_velocity_km_s":4265},"designations":[{"catalog":"2MASX","designation":"2MASX J23155594+1311466"},{"catalog":"LEDA","designation":"LEDA 70872"},{"catalog":"MCG","designation":"MCG +02-59-015"},{"catalog":"NGC","designation":"NGC 7563"},{"catalog":"PGC","designation":"PGC 70872"},{"catalog":"SDSS","designation":"SDSS J231555.92+131146.0"},{"catalog":"SDSS","designation":"SDSS J231555.93+131146.0"},{"catalog":"UGC","designation":"UGC 12465"}],"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."}