{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T14:17:02.416Z","years_from_j2000":26.681,"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-3692","name":"NGC 3692","class":"spiral_galaxy_sb","category":"galaxy","object_type":"Spiral galaxy Sb","mag":12.94,"mag_band":"B","abs_mag":null,"abs_mag_band":null,"distance_ly":96426093.14278641,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":172.10004166666667,"dec_deg":9.40763888888889,"epoch_ra_deg":172.447931,"epoch_dec_deg":9.259745,"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":"1784","featured":false,"url":"https://spacecatalog.org/object/ngc-3692","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.94,"h_mag":9.57,"j_mag":10.27,"k_mag":9.32,"redshift":0.00568,"hubble_type":"Sb","wikidata_id":"Q968164","redshift_cmb":0.006867214279340228,"discovered_by":"William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14578316.090167182,14578316.090167182]},"major_axis_arcmin":3.22,"minor_axis_arcmin":0.75,"position_angle_deg":93,"surface_brightness":23.45,"radial_velocity_km_s":1698},"designations":[{"catalog":"2MASX","designation":"2MASX J11282405+0924279"},{"catalog":"IRAS","designation":"IRAS 11258+0940"},{"catalog":"IRAS","designation":"IRAS F11258+0940"},{"catalog":"LEDA","designation":"LEDA 35314"},{"catalog":"MCG","designation":"MCG +02-29-032"},{"catalog":"NGC","designation":"NGC 3692"},{"catalog":"PGC","designation":"PGC 35314"},{"catalog":"SDSS","designation":"SDSS J112824.00+092427.4"},{"catalog":"SDSS","designation":"SDSS J112824.01+092427.4"},{"catalog":"SDSS","designation":"SDSS J112824.01+092427.5"},{"catalog":"UGC","designation":"UGC 6474"}],"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."}