{"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":"2026-09-05T04:00:09.274Z","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-632","name":"NGC 632","class":"lenticular_galaxy_s0_a","category":"galaxy","object_type":"Lenticular galaxy S0-a","mag":13.48,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":134517195.61660746,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":24.323041666666665,"dec_deg":5.87763888888889,"epoch_ra_deg":24.673417,"epoch_dec_deg":6.014653,"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":"Pisces","discovered":"1830","featured":false,"url":"https://spacecatalog.org/object/ngc-632","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.48,"h_mag":10.39,"j_mag":11.11,"k_mag":10.1,"redshift":0.010567,"hubble_type":"S0-a","wikidata_id":"Q967819","redshift_cmb":0.009560523658949105,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15086676.815867653,15086676.815867653]},"major_axis_arcmin":0.99,"minor_axis_arcmin":0.86,"wikipedia_article":"NGC 632","position_angle_deg":168,"surface_brightness":22.27,"radial_velocity_km_s":3151},"designations":[{"catalog":"2MASX","designation":"2MASX J01371753+0552389"},{"catalog":"IRAS","designation":"IRAS 01346+0537"},{"catalog":"IRAS","designation":"IRAS F01346+0537"},{"catalog":"LEDA","designation":"LEDA 6007"},{"catalog":"MCG","designation":"MCG +01-05-010"},{"catalog":"NGC","designation":"NGC 632"},{"catalog":"PGC","designation":"PGC 6007"},{"catalog":"SDSS","designation":"SDSS J013717.56+055238.4"},{"catalog":"UGC","designation":"UGC 1157"}],"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."}