{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T07:54:15.088Z","years_from_j2000":26.677,"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":"eso274-001","name":"ESO274-001","class":"spiral_galaxy_scd","category":"galaxy","object_type":"Spiral galaxy Scd","mag":11.19,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":31789766.621868975,"distance_method":"redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc","ra_deg":228.55766666666665,"dec_deg":-46.807944444444445,"epoch_ra_deg":229.020234,"epoch_dec_deg":-46.908182,"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":"Lupus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/eso274-001","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"b_mag":11.72,"h_mag":8.42,"j_mag":8.93,"k_mag":8.36,"v_mag":11.19,"redshift":0.001751,"hubble_type":"Scd","redshift_cmb":0.002271887071030987,"ngc_type_code":"G","uncertainties":{"distance_ly":[14060801.215656217,14060801.215656217]},"major_axis_arcmin":9.77,"minor_axis_arcmin":1.55,"position_angle_deg":39,"surface_brightness":23.86,"radial_velocity_km_s":524},"designations":[{"catalog":"2MASX","designation":"2MASX J15141342-4648331"},{"catalog":"ESO-LV","designation":"ESO-LV 2740010"},{"catalog":"IRAS","designation":"IRAS 15108-4637"},{"catalog":"OpenNGC","designation":"ESO274-001"},{"catalog":"PGC","designation":"PGC 54392"}],"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."}