{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T02:28:30.734Z","years_from_j2000":26.685,"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":"eso-337-016","name":"ESO 337-016","class":"barred_spiral_galaxy_sbb","category":"galaxy","object_type":"Barred spiral galaxy SBb","mag":14.243,"mag_band":"B","abs_mag":-20.593663655257863,"abs_mag_band":"B","distance_ly":302523144.74333286,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":289.096741,"dec_deg":-40.125736,"epoch_ra_deg":289.56054,"epoch_dec_deg":-40.078402,"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":"Corona Australis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/eso-337-016","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.243,"h_mag":10.765,"j_mag":11.45,"k_mag":10.603,"redshift":0.01951,"hubble_type":"SBb","redshift_cmb":0.021313474372394,"uncertainties":{"distance_ly":[16775421.345777618,16778663.162307583],"stellar_mass_solar":[8407215117.772263,8407215117.772263]},"major_axis_arcmin":0.723,"minor_axis_arcmin":0.55,"morphology_source":"SIMBAD (2003A&A...412...45P, quality E)","position_angle_deg":55,"stellar_mass_solar":17748565248.630333},"designations":[{"catalog":"2MASX","designation":"2MASX 19162321-4007326"},{"catalog":"PGC","designation":"PGC 62992"},{"catalog":"WISExSCOS","designation":"WISExSCOS J191623.24-400732.8"}],"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."}