{"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":"2026-09-03T08:43:59.659Z","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-2276","name":"NGC 2276","class":"intermediate_spiral_galaxy_sabc","category":"galaxy","object_type":"Intermediate spiral galaxy SABc","mag":11.5,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":111.80983333333334,"dec_deg":85.75455555555556,"epoch_ra_deg":114.008634,"epoch_dec_deg":85.698473,"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":"Cepheus","discovered":"1876","featured":false,"url":"https://spacecatalog.org/object/ngc-2276","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":11.99,"h_mag":9.46,"j_mag":10.08,"k_mag":9.08,"v_mag":11.5,"hubble_type":"SABc","wikidata_id":"Q1047876","discovered_by":"Friedrich August Theodor Winnecke","ngc_type_code":"G","major_axis_arcmin":2.23,"minor_axis_arcmin":1.73,"wikipedia_article":"NGC 2276","position_angle_deg":19,"surface_brightness":22.26},"designations":[{"catalog":"2MASX","designation":"2MASX J07271181+8544540"},{"catalog":"2MASX","designation":"2MASX J07271448+8545162"},{"catalog":"IRAS","designation":"IRAS 07101+8550"},{"catalog":"IRAS","designation":"IRAS 0710+858P15"},{"catalog":"IRAS","designation":"IRAS F07104+8550"},{"catalog":"LEDA","designation":"LEDA 21039"},{"catalog":"MCG","designation":"MCG +14-04-028"},{"catalog":"NGC","designation":"NGC 2276"},{"catalog":"PGC","designation":"PGC 21039"},{"catalog":"UGC","designation":"UGC 3740"}],"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."}