{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T11:11:07.396Z","years_from_j2000":26.683,"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-2613","name":"NGC 2613","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":10.38,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":91782503.64296804,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":128.34516666666667,"dec_deg":-22.973666666666666,"epoch_ra_deg":128.63907,"epoch_dec_deg":-23.064965,"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":"Pyxis","discovered":"1784","featured":false,"url":"https://spacecatalog.org/object/ngc-2613","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":11.11,"h_mag":7.12,"j_mag":7.83,"k_mag":6.83,"v_mag":10.38,"redshift":0.005606,"hubble_type":"Sb","wikidata_id":"Q1049986","redshift_cmb":0.006538136101109426,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14526207.77037962,14526207.77037962]},"major_axis_arcmin":7.62,"minor_axis_arcmin":1.79,"wikipedia_article":"NGC 2613","position_angle_deg":113,"surface_brightness":23.28,"radial_velocity_km_s":1676},"designations":[{"catalog":"2MASX","designation":"2MASX J08332284-2258252"},{"catalog":"ESO","designation":"ESO 495-018"},{"catalog":"ESO","designation":"ESO 495-18"},{"catalog":"ESO-LV","designation":"ESO-LV 495-0180"},{"catalog":"IRAS","designation":"IRAS 08311-2248"},{"catalog":"IRAS","designation":"IRAS F08311-2248"},{"catalog":"LEDA","designation":"LEDA 23997"},{"catalog":"MCG","designation":"MCG -04-21-003"},{"catalog":"NGC","designation":"NGC 2613"},{"catalog":"PGC","designation":"PGC 23997"},{"catalog":"UGCA","designation":"UGCA 141"}],"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."}