{"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":"2026-09-08T05:24:13.050Z","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":"ugc-10806","name":"UGC 10806","class":"spiral_galaxy_sd_im","category":"galaxy","object_type":"Spiral galaxy Sd-Im","mag":13.1,"mag_band":"B","abs_mag":-19.001197365843268,"abs_mag_band":"B","distance_ly":85835185.17123774,"distance_method":"luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":259.714203,"dec_deg":49.884243,"epoch_ra_deg":259.884321,"epoch_dec_deg":49.855477,"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":"Hercules","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ugc-10806","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.1,"h_mag":12.227,"j_mag":12.823,"k_mag":12.043,"redshift":0.00429324214662,"hubble_type":"Sd-Im","redshift_cmb":0.0061164287281763,"uncertainties":{"distance_ly":[12839767.270075591,12854485.634738099],"stellar_mass_solar":[93422430.7453901,93422430.7453901]},"major_axis_arcmin":2.67562,"minor_axis_arcmin":1.0855,"morphology_source":"SIMBAD (2018ApJ...864..123M, quality D)","position_angle_deg":83,"stellar_mass_solar":280267292.2361703},"designations":[{"catalog":"2MASX","designation":"2MASX 17185140+4953032"},{"catalog":"PGC","designation":"PGC 60052"},{"catalog":"WISExSCOS","designation":"WISExSCOS J171851.28+495302.4"}],"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."}