{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.820","julian_year":2026.82,"time":"2026-10-27T11:56:20.082Z","years_from_j2000":26.82,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued position is carried along the great circle the object's own published motion puts it on, at a constant velocity, from the epoch that position was measured at, 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. The motion runs from position_epoch_jyear where the upstream publishes one — a timed pulsar's position belongs to the year it was timed — and from J2000 where it does not. 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-1483","name":"NGC 1483","class":"barred_spiral_galaxy_sbbc","category":"galaxy","object_type":"Barred spiral galaxy SBbc","mag":12.76,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":51543747.35003516,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":58.1985,"dec_deg":-47.47752777777778,"epoch_ra_deg":58.406216,"epoch_dec_deg":-47.396789,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Horologium","discovered":"1826","featured":false,"url":"https://spacecatalog.org/object/ngc-1483","source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0","attribution":"OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.","commercial_use":"allowed"},"radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.19,"h_mag":10.6,"j_mag":11.26,"k_mag":10.59,"v_mag":12.76,"redshift":0.00385,"hubble_type":"SBbc","wikidata_id":"Q125818","redshift_cmb":0.0036796850911533507,"discovered_by":"James Dunlop","ngc_type_code":"G","uncertainties":{"distance_ly":[14170315.098604819,14170315.098604819]},"major_axis_arcmin":1.87,"minor_axis_arcmin":1.51,"wikipedia_article":"NGC 1483","position_angle_deg":153,"surface_brightness":23.12,"radial_velocity_km_s":1152},"designations":[{"catalog":"2MASX","designation":"2MASX J03524760-4728390"},{"catalog":"ESO","designation":"ESO 201-007"},{"catalog":"ESO","designation":"ESO 201-7"},{"catalog":"ESO-LV","designation":"ESO-LV 201-0070"},{"catalog":"IRAS","designation":"IRAS 03512-4737"},{"catalog":"LEDA","designation":"LEDA 14022"},{"catalog":"NGC","designation":"NGC 1483"},{"catalog":"PGC","designation":"PGC 14022"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. NGC 1483 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-1483","bibtex":"@misc{spacecatalog_ngc-1483,\n  author       = {{SpaceCatalog}},\n  title        = {{NGC 1483}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/ngc-1483},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from OpenNGC.}\n}","url":"https://spacecatalog.org/object/ngc-1483","release":"DR1","doi":null},"references":[],"attribution":"Data from SpaceCatalog.org. Each record names its upstream in `source`, with that producer's terms in `source.license`, the acknowledgement it asks for in `source.attribution`, and whether its terms allow commercial use in `source.commercial_use`; those terms govern the record, and citing SpaceCatalog does not discharge them."}