{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T17:22:04.893Z","years_from_j2000":26.686,"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-7545","name":"NGC 7545","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":13.83,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":86521440.9631266,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":348.88375,"dec_deg":-38.53558333333333,"epoch_ra_deg":349.252395,"epoch_dec_deg":-38.389138,"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":"Grus","discovered":"1834","featured":false,"url":"https://spacecatalog.org/object/ngc-7545","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.83,"h_mag":10.86,"j_mag":11.47,"k_mag":10.78,"redshift":0.007036,"hubble_type":"Sb","wikidata_id":"Q1167974","redshift_cmb":0.006165102802772937,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14469864.21332624,14469864.21332624]},"major_axis_arcmin":1.28,"minor_axis_arcmin":0.78,"position_angle_deg":84,"surface_brightness":22.74,"radial_velocity_km_s":2102},"designations":[{"catalog":"2MASX","designation":"2MASX J23153209-3832082"},{"catalog":"ESO","designation":"ESO 347-004"},{"catalog":"ESO","designation":"ESO 347-4"},{"catalog":"ESO-LV","designation":"ESO-LV 347-0040"},{"catalog":"IRAS","designation":"IRAS 23127-3848"},{"catalog":"IRAS","designation":"IRAS F23128-3848"},{"catalog":"LEDA","designation":"LEDA 70840"},{"catalog":"MCG","designation":"MCG -07-47-026"},{"catalog":"NGC","designation":"NGC 7545"},{"catalog":"PGC","designation":"PGC 70840"}],"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."}