{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T09:08:46.137Z","years_from_j2000":26.672,"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-7699","name":"NGC 7699","class":"spiral_galaxy_sa","category":"galaxy","object_type":"Spiral galaxy Sa","mag":15.73,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":241220947.46795514,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":353.612625,"dec_deg":-2.8994444444444443,"epoch_ra_deg":353.957581,"epoch_dec_deg":-2.751084,"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":"Pisces","discovered":"1864","featured":false,"url":"https://spacecatalog.org/object/ngc-7699","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":15.73,"h_mag":12.27,"j_mag":12.86,"k_mag":11.93,"redshift":0.01828,"hubble_type":"Sa","wikidata_id":"Q1168769","redshift_cmb":0.017048450809648452,"discovered_by":"Albert Marth","ngc_type_code":"G","uncertainties":{"distance_ly":[17172953.19090365,17172953.19090365]},"major_axis_arcmin":0.69,"minor_axis_arcmin":0.39,"position_angle_deg":97,"surface_brightness":23.34,"radial_velocity_km_s":5431},"designations":[{"catalog":"2MASX","designation":"2MASX J23342701-0253582"},{"catalog":"NGC","designation":"NGC 7699"},{"catalog":"PGC","designation":"PGC 71782"}],"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."}