{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T17:15:14.111Z","years_from_j2000":26.67,"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-83890","name":"PGC 83890","class":"elliptical_galaxy_e","category":"galaxy","object_type":"Elliptical galaxy E?","mag":15.112,"mag_band":"B","abs_mag":-17.395667124974807,"abs_mag_band":"B","distance_ly":103504516.31419168,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":199.096222,"dec_deg":-16.136524,"epoch_ra_deg":199.453951,"epoch_dec_deg":-16.278382,"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":"Virgo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-83890","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.112,"h_mag":12.344,"j_mag":13.011,"k_mag":12.179,"redshift":0.00764,"hubble_type":"E?","redshift_cmb":0.0073685300738183,"uncertainties":{"distance_ly":[6301921.493532857,6302437.211911543],"stellar_mass_solar":[186843394.73159903,186843394.73159903]},"major_axis_arcmin":0.37,"minor_axis_arcmin":0.274,"morphology_source":"SIMBAD (2003A&A...412...45P, quality E)","position_angle_deg":65,"stellar_mass_solar":1214482065.7553937},"designations":[{"catalog":"2MASX","designation":"2MASX 13162309-1608114"},{"catalog":"PGC","designation":"PGC 83890"},{"catalog":"WISExSCOS","designation":"WISExSCOS J131623.09-160810.9"}],"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":"2026-09-01T22:58:55.274Z","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."}