{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T13:14:26.883Z","years_from_j2000":26.678,"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-286-023","name":"ESO 286-023","class":"spiral_galaxy","category":"galaxy","object_type":"Spiral galaxy","mag":15.4,"mag_band":"B","abs_mag":-19.802424743253802,"abs_mag_band":"B","distance_ly":358022914.68617475,"distance_method":"luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":315.166321,"dec_deg":-44.648773,"epoch_ra_deg":315.615627,"epoch_dec_deg":-44.543923,"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":"Microscopium","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/eso-286-023","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.4,"h_mag":14.123,"j_mag":14.6,"k_mag":13.797,"redshift":0.026547,"hubble_type":"6.8","redshift_cmb":0.0251522584419093,"uncertainties":{"distance_ly":[78273220.00990511,78845993.8891088],"stellar_mass_solar":[1868224930.9571016,1868224930.9571016]},"major_axis_arcmin":0.611583,"minor_axis_arcmin":0.401994,"morphology_source":"SIMBAD (1989ESOLV.C......0L, quality D)","position_angle_deg":66,"stellar_mass_solar":2802337396.4356523},"designations":[{"catalog":"2MASX","designation":"2MASX 21003991-4438555"},{"catalog":"PGC","designation":"PGC 65885"},{"catalog":"WISExSCOS","designation":"WISExSCOS J210039.93-443855.5"}],"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."}