{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T03:25:18.643Z","years_from_j2000":26.677,"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-1796b","name":"NGC 1796B","class":"spiral_galaxy_sbc","category":"galaxy","object_type":"Spiral galaxy Sbc","mag":15.77,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":274011333.2991001,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":76.97874999999999,"dec_deg":-61.191111111111105,"epoch_ra_deg":77.059073,"epoch_dec_deg":-61.155293,"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":"Dorado","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ngc-1796b","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.77,"h_mag":11.2,"j_mag":11.96,"k_mag":10.93,"redshift":0.01921,"hubble_type":"Sbc","wikidata_id":"Q6584507","redshift_cmb":0.01933308663943012,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[17972509.958491642,17972509.958491642]},"major_axis_arcmin":1.12,"minor_axis_arcmin":0.25,"position_angle_deg":25,"surface_brightness":23.65,"radial_velocity_km_s":5703},"designations":[{"catalog":"ESO","designation":"ESO 119-037"},{"catalog":"ESO","designation":"ESO 119-38"},{"catalog":"ESO-LV","designation":"ESO-LV 119-0370"},{"catalog":"IRAS","designation":"IRAS 05073-6115"},{"catalog":"IRAS","designation":"IRAS 05078-6125"},{"catalog":"LEDA","designation":"LEDA 16803"},{"catalog":"NGC","designation":"NGC 1796B"},{"catalog":"PGC","designation":"PGC 16787"},{"catalog":"PGC","designation":"PGC 16803"}],"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."}