{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T06:04:53.599Z","years_from_j2000":26.68,"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":"ic0700-ned04","name":"IC0700 NED04","class":"irregular_galaxy_i","category":"galaxy","object_type":"Irregular galaxy I","mag":18.73,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":93821198.08358166,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":172.31958333333333,"dec_deg":20.58786111111111,"epoch_ra_deg":172.671934,"epoch_dec_deg":20.439889,"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","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/ic0700-ned04","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":18.73,"redshift":0.005586,"hubble_type":"I","redshift_cmb":0.00668263267357827,"ngc_type_code":"G","uncertainties":{"distance_ly":[14548812.089831518,14548812.089831518]},"major_axis_arcmin":0.25,"minor_axis_arcmin":0.11,"position_angle_deg":54,"surface_brightness":23.68,"radial_velocity_km_s":1670},"designations":[{"catalog":"MCG","designation":"MCG +04-27-047 NED04"},{"catalog":"OpenNGC","designation":"IC0700 NED04"},{"catalog":"PGC","designation":"PGC 35385"},{"catalog":"UGC","designation":"UGC 06487 NED04"}],"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."}