{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T03:38:10.832Z","years_from_j2000":26.682,"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-2090","name":"NGC 2090","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":10.92,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":46475930.66584476,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":86.757875,"dec_deg":-34.25061111111111,"epoch_ra_deg":87.000528,"epoch_dec_deg":-34.240174,"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":"Columba","discovered":"1826","featured":false,"url":"https://spacecatalog.org/object/ngc-2090","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":11.48,"h_mag":8.3,"j_mag":8.92,"k_mag":8.05,"v_mag":10.92,"redshift":0.003079,"hubble_type":"Sc","wikidata_id":"Q1046854","redshift_cmb":0.003318805470993391,"discovered_by":"James Dunlop","ngc_type_code":"G","uncertainties":{"distance_ly":[14138032.368646313,14138032.368646313]},"major_axis_arcmin":4.47,"minor_axis_arcmin":1.67,"wikipedia_article":"NGC 2090","position_angle_deg":17,"surface_brightness":22.69,"radial_velocity_km_s":922},"designations":[{"catalog":"2MASX","designation":"2MASX J05470188-3415021"},{"catalog":"ESO","designation":"ESO 363-023"},{"catalog":"ESO","designation":"ESO 363-23"},{"catalog":"ESO-LV","designation":"ESO-LV 363-0230"},{"catalog":"IRAS","designation":"IRAS 05452-3416"},{"catalog":"IRAS","designation":"IRAS F05452-3415"},{"catalog":"LEDA","designation":"LEDA 17819"},{"catalog":"MCG","designation":"MCG -06-13-009"},{"catalog":"NGC","designation":"NGC 2090"},{"catalog":"PGC","designation":"PGC 17819"}],"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."}