{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.673","julian_year":2026.673,"time":"2026-09-03T22:13:39.588Z","years_from_j2000":26.673,"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":"ic-2608","name":"IC 2608","class":"barred_spiral_galaxy_sbc","category":"galaxy","object_type":"Barred spiral galaxy SBc","mag":15.45,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":91861022.53342558,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":162.56466666666668,"dec_deg":32.768166666666666,"epoch_ra_deg":162.938597,"epoch_dec_deg":32.626071,"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":"Leo Minor","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-2608","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.45,"h_mag":12.54,"j_mag":13.16,"k_mag":12.21,"redshift":0.005594,"hubble_type":"SBc","wikidata_id":"Q3689460","redshift_cmb":0.0065437018657867885,"ngc_type_code":"G","uncertainties":{"distance_ly":[14527070.419755243,14527070.419755243]},"major_axis_arcmin":0.79,"minor_axis_arcmin":0.31,"position_angle_deg":121,"surface_brightness":22.99,"radial_velocity_km_s":1672},"designations":[{"catalog":"2MASX","designation":"2MASX J10501549+3246055"},{"catalog":"IC","designation":"IC 2608"},{"catalog":"IRAS","designation":"IRAS F10474+3302"},{"catalog":"LEDA","designation":"LEDA 32464"},{"catalog":"PGC","designation":"PGC 32464"},{"catalog":"SDSS","designation":"SDSS J105015.51+324605.3"},{"catalog":"SDSS","designation":"SDSS J105015.51+324605.4"},{"catalog":"SDSS","designation":"SDSS J105015.52+324605.4"}],"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."}