{"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":"2026-09-08T05:31:13.208Z","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":"ngc-3895","name":"NGC 3895","class":"barred_spiral_galaxy_sba","category":"galaxy","object_type":"Barred spiral galaxy SBa","mag":13.03,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":157797498.2342244,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":177.26679166666668,"dec_deg":59.43266666666666,"epoch_ra_deg":177.626223,"epoch_dec_deg":59.283326,"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":"1790","featured":false,"url":"https://spacecatalog.org/object/ngc-3895","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":13.98,"h_mag":10.04,"j_mag":10.75,"k_mag":9.8,"v_mag":13.03,"redshift":0.01071,"hubble_type":"SBa","wikidata_id":"Q1107023","redshift_cmb":0.011201297169173063,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[15464211.386926133,15464211.386926133]},"major_axis_arcmin":1.19,"minor_axis_arcmin":0.81,"position_angle_deg":124,"surface_brightness":22.9,"radial_velocity_km_s":3194},"designations":[{"catalog":"2MASX","designation":"2MASX J11490400+5925580"},{"catalog":"LEDA","designation":"LEDA 36907"},{"catalog":"MCG","designation":"MCG +10-17-080"},{"catalog":"NGC","designation":"NGC 3895"},{"catalog":"PGC","designation":"PGC 36907"},{"catalog":"SDSS","designation":"SDSS J114904.01+592557.9"},{"catalog":"SDSS","designation":"SDSS J114904.02+592557.6"},{"catalog":"SDSS","designation":"SDSS J114904.03+592557.6"},{"catalog":"UGC","designation":"UGC 6785"}],"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."}