{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T05:50:33.894Z","years_from_j2000":26.674,"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":"ic-2053","name":"IC 2053","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":15.27,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":63.981750000000005,"dec_deg":-49.358333333333334,"epoch_ra_deg":64.170538,"epoch_dec_deg":-49.290913,"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/ic-2053","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.27,"h_mag":11.84,"j_mag":12.61,"k_mag":11.65,"hubble_type":"S0-a","wikidata_id":"Q3691348","ngc_type_code":"G","major_axis_arcmin":0.53,"minor_axis_arcmin":0.48,"position_angle_deg":73,"surface_brightness":22.65},"designations":[{"catalog":"2MASX","designation":"2MASX J04155565-4921300"},{"catalog":"ESO","designation":"ESO 201-028"},{"catalog":"ESO-LV","designation":"ESO-LV 201-0280"},{"catalog":"IC","designation":"IC 2053"},{"catalog":"PGC","designation":"PGC 14760"}],"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."}