{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T03:31:00.784Z","years_from_j2000":26.685,"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-12795","name":"UGC 12795","class":"spiral_galaxy_sbc","category":"galaxy","object_type":"Spiral galaxy Sbc","mag":13.986,"mag_band":"B","abs_mag":-20.7820156493101,"abs_mag_band":"B","distance_ly":293108899.6311133,"distance_method":"luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":357.293762,"dec_deg":46.5532,"epoch_ra_deg":357.628588,"epoch_dec_deg":46.702542,"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":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ugc-12795","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.986,"h_mag":12.108,"j_mag":12.755,"k_mag":11.806,"redshift":0.018214,"hubble_type":"Sbc","redshift_cmb":0.0206602027282431,"uncertainties":{"distance_ly":[53833406.70544671,54102323.24181847],"stellar_mass_solar":[3736555409.2502728,3736555409.2502728]},"major_axis_arcmin":0.637,"minor_axis_arcmin":0.293,"morphology_source":"SIMBAD (2003A&A...412...45P, quality E)","position_angle_deg":110,"stellar_mass_solar":6538971966.187978},"designations":[{"catalog":"2MASX","designation":"2MASX 23491050+4633115"},{"catalog":"PGC","designation":"PGC 72510"},{"catalog":"WISExSCOS","designation":"WISExSCOS J234910.49+463312"}],"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."}