{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-05T01:09:58.179Z","years_from_j2000":26.676,"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":"ngc-2605","name":"NGC 2605","class":"barred_spiral_galaxy_sbb","category":"galaxy","object_type":"Barred spiral galaxy SBb","mag":16.43,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":128.72212499999998,"dec_deg":52.80430555555555,"epoch_ra_deg":129.221066,"epoch_dec_deg":52.712044,"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":"Ursa Major","discovered":"1858","featured":false,"url":"https://spacecatalog.org/object/ngc-2605","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":16.43,"h_mag":14.36,"j_mag":15.23,"k_mag":14.11,"hubble_type":"SBb","wikidata_id":"Q1049967","discovered_by":"William Parsons, 3rd Earl of Rosse","ngc_type_code":"G","major_axis_arcmin":0.45,"minor_axis_arcmin":0.35,"position_angle_deg":27,"surface_brightness":23.33},"designations":[{"catalog":"2MASX","designation":"2MASX J08345328+5248157"},{"catalog":"NGC","designation":"NGC 2605"},{"catalog":"PGC","designation":"PGC 2424112"},{"catalog":"SDSS","designation":"SDSS J083453.31+524815.4"},{"catalog":"SDSS","designation":"SDSS J083453.31+524815.5"}],"source":{"id":"openngc","name":"OpenNGC","url":"https://github.com/mattiaverga/OpenNGC","license":"CC-BY-SA-4.0"},"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."}