{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T19:36:47.323Z","years_from_j2000":26.684,"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":"pgc-1133004","name":"PGC 1133004","class":"galaxy","category":"galaxy","object_type":"Galaxy","mag":16.537,"mag_band":"B","abs_mag":-18.22231338515484,"abs_mag_band":"B","distance_ly":291936604.3529638,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":75.045059,"dec_deg":-0.854946,"epoch_ra_deg":75.387229,"epoch_dec_deg":-0.814547,"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":"Orion","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-1133004","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":16.537,"h_mag":13.271,"j_mag":14.014,"k_mag":12.948,"redshift":0.02131,"redshift_cmb":0.0205788117875846,"uncertainties":{"distance_ly":[15055543.478858573,15060249.099347403],"stellar_mass_solar":[2802417995.716903,2802417995.716903]},"stellar_mass_solar":5604835991.433806},"designations":[{"catalog":"2MASX","designation":"2MASX 05001081-0051178"},{"catalog":"PGC","designation":"PGC 1133004"},{"catalog":"WISExSCOS","designation":"WISExSCOS J050010.89-005116.8"}],"source":{"id":"glade_plus","name":"GLADE+ (Galaxy List for the Advanced Detector Era)","url":"https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/291","license":"VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D)"},"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."}