{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.668","julian_year":2026.668,"time":"2026-09-02T01:03:34.209Z","years_from_j2000":26.668,"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-47786","name":"PGC 47786","class":"lenticular_galaxy","category":"galaxy","object_type":"Lenticular galaxy","mag":15.688,"mag_band":"B","abs_mag":-19.024377128633468,"abs_mag_band":"B","distance_ly":285694119.2581355,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":203.519577,"dec_deg":3.347002,"epoch_ra_deg":203.860256,"epoch_dec_deg":3.209202,"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":"Virgo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-47786","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.688,"h_mag":12.579,"j_mag":13.213,"k_mag":12.381,"redshift":0.02189,"hubble_type":"0","redshift_cmb":0.0201452425594582,"uncertainties":{"distance_ly":[15649936.13685283,15654842.133899022],"stellar_mass_solar":[2802425640.180453,2802425640.180453]},"major_axis_arcmin":0.673707,"minor_axis_arcmin":0.283563,"morphology_source":"SIMBAD (2019MNRAS.487.5572M, quality D)","position_angle_deg":28,"stellar_mass_solar":5604851280.360906},"designations":[{"catalog":"2MASX","designation":"2MASX 13340469+0320492"},{"catalog":"PGC","designation":"PGC 47786"},{"catalog":"WISExSCOS","designation":"WISExSCOS J133404.71+032049.5"}],"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":"2026-09-01T22:58:55.274Z","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."}