{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T22:06:24.919Z","years_from_j2000":26.679,"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-2816074","name":"PGC 2816074","class":"elliptical_galaxy_debc","category":"galaxy","object_type":"Elliptical galaxy dEbc","mag":15.688,"mag_band":"B","abs_mag":-16.839348242374484,"abs_mag_band":"B","distance_ly":104446892.56935047,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":210.75354,"dec_deg":50.012081,"epoch_ra_deg":211.00875,"epoch_dec_deg":49.882562,"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":"Ursa Major","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-2816074","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.688,"h_mag":13.167,"j_mag":13.795,"k_mag":12.905,"redshift":0.00637,"hubble_type":"dEbc","redshift_cmb":0.0074352436762733,"uncertainties":{"distance_ly":[5875564.127867969,5875884.748319164],"stellar_mass_solar":[280264965.1613658,280264965.1613658]},"major_axis_arcmin":0.26,"minor_axis_arcmin":0.203,"morphology_source":"SIMBAD (2015ApJS..217...27A, quality C)","position_angle_deg":90,"stellar_mass_solar":560529930.3227316},"designations":[{"catalog":"2MASX","designation":"2MASX 14030084+5000434"},{"catalog":"PGC","designation":"PGC 2816074"},{"catalog":"WISExSCOS","designation":"WISExSCOS J140300.80+500043.5"}],"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."}