{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T20:59:59.294Z","years_from_j2000":26.67,"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-3094","name":"IC 3094","class":"spiral_galaxy_sab","category":"galaxy","object_type":"Spiral galaxy Sab","mag":14.53,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":184.233375,"dec_deg":13.625416666666666,"epoch_ra_deg":184.575186,"epoch_dec_deg":13.476202,"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":"Coma Berenices","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic-3094","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":14.53,"h_mag":11.45,"j_mag":12.14,"k_mag":11.25,"redshift":-0.00055,"hubble_type":"Sab","wikidata_id":"Q3687955","redshift_cmb":0.0005565462299952362,"ngc_type_code":"G","major_axis_arcmin":0.54,"minor_axis_arcmin":0.46,"position_angle_deg":108,"surface_brightness":21.83,"radial_velocity_km_s":-165},"designations":[{"catalog":"2MASX","designation":"2MASX J12165600+1337310"},{"catalog":"IC","designation":"IC 3094"},{"catalog":"IRAS","designation":"IRAS F12143+1354"},{"catalog":"LEDA","designation":"LEDA 39362"},{"catalog":"MCG","designation":"MCG +02-31-078"},{"catalog":"PGC","designation":"PGC 39362"},{"catalog":"SDSS","designation":"SDSS J121656.00+133731.4"},{"catalog":"SDSS","designation":"SDSS J121656.00+133731.5"},{"catalog":"SDSS","designation":"SDSS J121656.01+133731.5"},{"catalog":"UGC","designation":"UGC 7305"}],"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."}