{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.667","julian_year":2026.667,"time":"2026-09-01T17:58:32.330Z","years_from_j2000":26.667,"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-69990","name":"PGC 69990","class":"lenticular_galaxy_s0","category":"galaxy","object_type":"Lenticular galaxy S0...","mag":14.756,"mag_band":"B","abs_mag":-15.585321866442122,"abs_mag_band":"B","distance_ly":38167195.41598594,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":343.688477,"dec_deg":-26.890057,"epoch_ra_deg":344.05458,"epoch_dec_deg":-26.747118,"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":"Piscis Austrinus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-69990","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.756,"h_mag":13.889,"j_mag":14.188,"k_mag":13.47,"redshift":0.0031,"hubble_type":"S0...","redshift_cmb":0.0027267127959905,"uncertainties":{"distance_ly":[3293313.903843776,3293379.711858907],"stellar_mass_solar":[18684886.50381063,18684886.50381063]},"major_axis_arcmin":0.327,"minor_axis_arcmin":0.235,"morphology_source":"SIMBAD (1996MNRAS.278.1025L, quality D)","position_angle_deg":90,"stellar_mass_solar":37369773.00762126},"designations":[{"catalog":"2MASX","designation":"2MASX 22544523-2653242"},{"catalog":"PGC","designation":"PGC 69990"},{"catalog":"WISExSCOS","designation":"WISExSCOS J225445.19-265324.7"}],"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."}