{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T17:05:58.299Z","years_from_j2000":26.654,"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-9892","name":"PGC 9892","class":"lenticular_galaxy_s0pec","category":"galaxy","object_type":"Lenticular galaxy S0pec","mag":7.5,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":39.147789,"dec_deg":59.654591,"epoch_ra_deg":39.651085,"epoch_dec_deg":59.771539,"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":"Cassiopeia","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-9892","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":7.5,"h_mag":5.209,"j_mag":6.317,"k_mag":4.749,"redshift":0.00097272048636,"hubble_type":"S0pec","redshift_cmb":0.0017833983665565,"morphology_source":"SIMBAD (2013MNRAS.435.2274W, quality D)"},"designations":[{"catalog":"2MASX","designation":"2MASX 02363546+5939165"},{"catalog":"PGC","designation":"PGC 9892"},{"catalog":"WISExSCOS","designation":"WISExSCOS J023635.53+593917.2"}],"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":"2026-08-27T16:03:54.983Z","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."}