{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T08:47:58.240Z","years_from_j2000":26.669,"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-2297","name":"NGC 2297","class":"spiral_galaxy_sbc","category":"galaxy","object_type":"Spiral galaxy Sbc","mag":12.71,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":158116629.9553956,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":101.10245833333333,"dec_deg":-63.717333333333336,"epoch_ra_deg":101.148414,"epoch_dec_deg":-63.743912,"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":"Pictor","discovered":"1835","featured":false,"url":"https://spacecatalog.org/object/ngc-2297","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.4,"h_mag":10.32,"j_mag":11,"k_mag":9.97,"v_mag":12.71,"redshift":0.010873,"hubble_type":"Sbc","wikidata_id":"Q1048025","redshift_cmb":0.011223761514634445,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15469717.495939713,15469717.495939713]},"major_axis_arcmin":1.48,"minor_axis_arcmin":0.9,"wikipedia_article":"NGC 2297","position_angle_deg":4,"surface_brightness":22.62,"radial_velocity_km_s":3242},"designations":[{"catalog":"2MASX","designation":"2MASX J06442460-6343021"},{"catalog":"ESO","designation":"ESO 087-040"},{"catalog":"ESO","designation":"ESO 87-40"},{"catalog":"ESO-LV","designation":"ESO-LV 87-0400"},{"catalog":"IRAS","designation":"IRAS 06440-6339"},{"catalog":"LEDA","designation":"LEDA 19524"},{"catalog":"NGC","designation":"NGC 2297"},{"catalog":"PGC","designation":"PGC 19524"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}