{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T04:47:40.248Z","years_from_j2000":26.682,"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-75707","name":"PGC 75707","class":"spiral_galaxy_sab","category":"galaxy","object_type":"Spiral galaxy Sab","mag":16.128,"mag_band":"B","abs_mag":-18.981819939845927,"abs_mag_band":"B","distance_ly":343075624.9894107,"distance_method":"luminosity distance from a spectroscopic redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":95.703423,"dec_deg":-65.050728,"epoch_ra_deg":95.727174,"epoch_dec_deg":-65.063337,"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":"Dorado","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/pgc-75707","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":16.128,"h_mag":13.485,"j_mag":14.412,"k_mag":13.432,"redshift":0.0249,"hubble_type":"Sab","redshift_cmb":0.0241204717115314,"uncertainties":{"distance_ly":[22113291.38989468,22118408.24326298],"stellar_mass_solar":[934118527.2076147,934118527.2076147]},"major_axis_arcmin":0.237,"minor_axis_arcmin":0.17,"morphology_source":"SIMBAD (2003A&A...412...45P, quality E)","position_angle_deg":145,"stellar_mass_solar":2802355581.622844},"designations":[{"catalog":"2MASX","designation":"2MASX 06224882-6503026"},{"catalog":"PGC","designation":"PGC 75707"},{"catalog":"WISExSCOS","designation":"WISExSCOS J062248.88-650302.5"}],"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."}