{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-06T23:34:31.472Z","years_from_j2000":26.682,"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-7098","name":"NGC 7098","class":"spiral_galaxy_sa","category":"galaxy","object_type":"Spiral galaxy Sa","mag":11.53,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":109417021.29683927,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":326.06716666666665,"dec_deg":-75.11133333333333,"epoch_ra_deg":326.728555,"epoch_dec_deg":-74.988028,"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":"Octans","discovered":"1835","featured":false,"url":"https://spacecatalog.org/object/ngc-7098","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":12.54,"h_mag":7.84,"j_mag":8.94,"k_mag":7.87,"v_mag":11.53,"redshift":0.007936,"hubble_type":"Sa","wikidata_id":"Q1149580","redshift_cmb":0.007786983586960838,"discovered_by":"John Frederick William Herschel","ngc_type_code":"G","uncertainties":{"distance_ly":[14735727.183538489,14735727.183538489]},"major_axis_arcmin":1.78,"minor_axis_arcmin":0.91,"wikipedia_article":"NGC 7098","position_angle_deg":62,"surface_brightness":22.21,"radial_velocity_km_s":2370},"designations":[{"catalog":"2MASX","designation":"2MASX J21441607-7506408"},{"catalog":"ESO","designation":"ESO 048-005"},{"catalog":"ESO","designation":"ESO 48-5"},{"catalog":"ESO-LV","designation":"ESO-LV 48-0050"},{"catalog":"IRAS","designation":"IRAS 21393-7520"},{"catalog":"LEDA","designation":"LEDA 67266"},{"catalog":"NGC","designation":"NGC 7098"},{"catalog":"PGC","designation":"PGC 67266"}],"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."}