{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T23:03:31.544Z","years_from_j2000":26.684,"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":"ugc-8025","name":"UGC 8025","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":13.52,"mag_band":"B","abs_mag":-20.9659601298646,"abs_mag_band":"B","distance_ly":257405546.77339786,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":193.510223,"dec_deg":29.603651,"epoch_ra_deg":193.835737,"epoch_dec_deg":29.457757,"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":"Coma Berenices","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ugc-8025","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.52,"h_mag":10.576,"j_mag":11.364,"k_mag":10.256,"redshift":0.0202234301117,"hubble_type":"Sb","redshift_cmb":0.018177045837753,"uncertainties":{"distance_ly":[15045686.242241008,15049707.721948216],"stellar_mass_solar":[6539073954.533627,6539073954.533627]},"major_axis_arcmin":1.92104,"minor_axis_arcmin":0.328498,"morphology_source":"SIMBAD (2015MNRAS.446.3749Y, quality D)","position_angle_deg":72,"stellar_mass_solar":14012301331.143486},"designations":[{"catalog":"2MASX","designation":"2MASX 12540245+2936131"},{"catalog":"PGC","designation":"PGC 43863"},{"catalog":"WISExSCOS","designation":"WISExSCOS J125402.53+293613.5"}],"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":"2026-09-02T19:50:56.720Z","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."}