{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T06:27:34.688Z","years_from_j2000":26.666,"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-978064","name":"PGC 978064","class":"galaxy","category":"galaxy","object_type":"Galaxy","mag":15.721,"mag_band":"B","abs_mag":-18.126664349809612,"abs_mag_band":"B","distance_ly":191848648.969806,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":193.242432,"dec_deg":-10.450053,"epoch_ra_deg":193.592435,"epoch_dec_deg":-10.595971,"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-978064","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.721,"h_mag":12.286,"j_mag":13.016,"k_mag":12.119,"redshift":0.01424,"redshift_cmb":0.013594027280096,"uncertainties":{"distance_ly":[12718143.335764172,12719801.746963283],"stellar_mass_solar":[653926249.2684156,653926249.2684156]},"stellar_mass_solar":5511664100.9766445},"designations":[{"catalog":"2MASX","designation":"2MASX 12525818-1027001"},{"catalog":"PGC","designation":"PGC 978064"},{"catalog":"WISExSCOS","designation":"WISExSCOS J125258.16-102700.2"}],"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":"2026-08-30T09:56:50.739Z","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."}