{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T14:51:04.557Z","years_from_j2000":26.686,"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":"ugc-5682","name":"UGC 5682","class":"barred_spiral_galaxy_sbcd","category":"galaxy","object_type":"Barred spiral galaxy SBcd","mag":15.23,"mag_band":"B","abs_mag":-18.058258162974877,"abs_mag_band":"B","distance_ly":148278269.12602624,"distance_method":"luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":157.789017,"dec_deg":78.887459,"epoch_ra_deg":158.42637,"epoch_dec_deg":78.749512,"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":"Draco","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ugc-5682","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.23,"h_mag":14.328,"j_mag":15.128,"k_mag":14.245,"redshift":0.00957810478905,"hubble_type":"SBcd","redshift_cmb":0.0105308743370359,"uncertainties":{"distance_ly":[27970741.236696295,28045831.55971686],"stellar_mass_solar":[186839673.4774713,186839673.4774713]},"major_axis_arcmin":0.894827,"minor_axis_arcmin":0.561593,"morphology_source":"SIMBAD (2015ApJS..217...27A, quality C)","position_angle_deg":101,"stellar_mass_solar":373679346.9549426},"designations":[{"catalog":"2MASX","designation":"2MASX 10310936+7853148"},{"catalog":"PGC","designation":"PGC 31027"},{"catalog":"WISExSCOS","designation":"WISExSCOS J103109.46+785313.9"}],"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."}