{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T19:02:25.122Z","years_from_j2000":26.681,"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-2200","name":"NGC 2200","class":"barred_spiral_galaxy_sbc","category":"galaxy","object_type":"Barred spiral galaxy SBc","mag":14.86,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":227429341.38185212,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":93.32325,"dec_deg":-43.66316666666666,"epoch_ra_deg":93.524836,"epoch_dec_deg":-43.669809,"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":"Puppis","discovered":"1835","featured":false,"url":"https://spacecatalog.org/object/ngc-2200","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.86,"h_mag":11.92,"j_mag":12.59,"k_mag":11.89,"redshift":0.015742,"hubble_type":"SBc","wikidata_id":"Q1047441","redshift_cmb":0.016085255463915926,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[16856248.505703542,16856248.505703542]},"major_axis_arcmin":1.21,"minor_axis_arcmin":0.94,"position_angle_deg":168,"surface_brightness":23.74,"radial_velocity_km_s":4682},"designations":[{"catalog":"2MASX","designation":"2MASX J06131758-4339475"},{"catalog":"ESO","designation":"ESO 254-039"},{"catalog":"ESO","designation":"ESO 254-39"},{"catalog":"ESO-LV","designation":"ESO-LV 254-0390"},{"catalog":"LEDA","designation":"LEDA 18652"},{"catalog":"MCG","designation":"MCG -07-13-006"},{"catalog":"NGC","designation":"NGC 2200"},{"catalog":"PGC","designation":"PGC 18652"}],"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."}