{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T04:10:33.784Z","years_from_j2000":26.674,"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-3079935","name":"PGC 3079935","class":"spiral_galaxy_sc","category":"galaxy","object_type":"Spiral galaxy Sc","mag":13.68,"mag_band":"B","abs_mag":-20.56345117623124,"abs_mag_band":"B","distance_ly":230205719.9811043,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":241.557831,"dec_deg":-60.171371,"epoch_ra_deg":242.130254,"epoch_dec_deg":-60.243938,"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":"Norma","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-3079935","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.68,"h_mag":10.573,"j_mag":11.357,"k_mag":10.311,"redshift":0.0157806678903,"hubble_type":"Sc","redshift_cmb":0.0162792647746756,"uncertainties":{"distance_ly":[29259543.259375963,29260525.272188053],"stellar_mass_solar":[4670822928.133529,4670822928.133529]},"major_axis_arcmin":0.527,"minor_axis_arcmin":0.284,"morphology_source":"SIMBAD (2003A&A...412...45P, quality E)","position_angle_deg":110,"stellar_mass_solar":40169077181.94834},"designations":[{"catalog":"2MASX","designation":"2MASX 16061387-6010169"},{"catalog":"PGC","designation":"PGC 3079935"},{"catalog":"WISExSCOS","designation":"WISExSCOS J160613.87-601016.6"}],"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."}