{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T01:34:30.772Z","years_from_j2000":26.682,"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-713507","name":"PGC 713507","class":"spiral_galaxy_sp","category":"galaxy","object_type":"Spiral galaxy Sp","mag":15.819,"mag_band":"B","abs_mag":-17.15956540949351,"abs_mag_band":"B","distance_ly":128569796.67866375,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":195.186279,"dec_deg":-30.743605,"epoch_ra_deg":195.55284,"epoch_dec_deg":-30.888435,"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":"Centaurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-713507","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.819,"h_mag":13.122,"j_mag":13.812,"k_mag":12.743,"redshift":0.01012,"hubble_type":"Sp","redshift_cmb":0.0091407135958504,"uncertainties":{"distance_ly":[8659090.644834142,8659963.537844405],"stellar_mass_solar":[373682619.2116964,373682619.2116964]},"major_axis_arcmin":0.297,"minor_axis_arcmin":0.154,"morphology_source":"SIMBAD (quality D)","position_angle_deg":120,"stellar_mass_solar":747365238.4233928},"designations":[{"catalog":"2MASX","designation":"2MASX 13004470-3044369"},{"catalog":"PGC","designation":"PGC 713507"},{"catalog":"WISExSCOS","designation":"WISExSCOS J130044.56-304436.2"}],"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":"2026-09-02T19:50:56.720Z","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."}