{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T23:02:41.924Z","years_from_j2000":26.676,"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-1038813","name":"PGC 1038813","class":"spiral_galaxy","category":"galaxy","object_type":"Spiral galaxy","mag":15.38,"mag_band":"B","abs_mag":-19.43996403399447,"abs_mag_band":"B","distance_ly":300205525.86135685,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":54.379623,"dec_deg":-5.925979,"epoch_ra_deg":54.711335,"epoch_dec_deg":-5.837384,"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":"Eridanus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-1038813","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.38,"h_mag":13.775,"j_mag":14.278,"k_mag":13.221,"redshift":0.02219,"hubble_type":"6","redshift_cmb":0.0211527078044631,"uncertainties":{"distance_ly":[15690271.526804509,15695370.477975832],"stellar_mass_solar":[934135957.5835717,934135957.5835717]},"major_axis_arcmin":0.769863,"minor_axis_arcmin":0.320879,"morphology_source":"SIMBAD (2010ApJS..186..427N, quality D)","position_angle_deg":147,"stellar_mass_solar":1868271915.1671433},"designations":[{"catalog":"2MASX","designation":"2MASX 03373110-0555335"},{"catalog":"PGC","designation":"PGC 1038813"},{"catalog":"WISExSCOS","designation":"WISExSCOS J033731.03-055534.3"}],"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."}