{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.665","julian_year":2026.665,"time":"2026-08-31T21:03:12.814Z","years_from_j2000":26.665,"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-45822","name":"PGC 45822","class":"elliptical_galaxy","category":"galaxy","object_type":"Elliptical galaxy","mag":14.401,"mag_band":"B","abs_mag":-19.835544548724,"abs_mag_band":"B","distance_ly":229474686.36340633,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":197.989319,"dec_deg":34.365196,"epoch_ra_deg":198.303051,"epoch_dec_deg":34.22245,"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":"Canes Venatici","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-45822","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.401,"h_mag":11.262,"j_mag":11.907,"k_mag":10.95,"redshift":0.01687,"hubble_type":"-4.9","redshift_cmb":0.0162281865489175,"uncertainties":{"distance_ly":[12530323.992711246,12533125.190511266],"stellar_mass_solar":[2802494643.910868,2802494643.910868]},"major_axis_arcmin":0.993173,"minor_axis_arcmin":0.909151,"morphology_source":"SIMBAD (2001ApJ...560..566K, quality D)","position_angle_deg":131,"stellar_mass_solar":18683297626.072456},"designations":[{"catalog":"2MASX","designation":"2MASX 13115743+3421547"},{"catalog":"PGC","designation":"PGC 45822"},{"catalog":"WISExSCOS","designation":"WISExSCOS J131157.47+342154.9"}],"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."}