{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T18:04:01.425Z","years_from_j2000":26.676,"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":"hip-64537","name":"HIP 64537","class":"g5_yellow_star","category":"star","object_type":"G5 yellow star","mag":9.14,"mag_band":"V","abs_mag":5.119,"abs_mag_band":"V","distance_ly":207.7430216920357,"distance_method":"parallax","ra_deg":198.42108,"dec_deg":-62.794071,"epoch_ra_deg":198.852017,"epoch_dec_deg":-62.936909,"epoch_moved_arcsec":3.892,"pm_ra_mas_yr":-133.92,"pm_dec_mas_yr":-57.9,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Centaurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-64537","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"13137-6248","companions":[{"measured":2025,"magnitude":10.36,"components":null,"discoverer_code":"HDS1852","separation_arcsec":0.1,"position_angle_deg":290}],"spectral_type":"G5","color_index_bv":0.798,"luminosity_solar":0.7805486914662377,"variable_mag_max":9.097,"variable_mag_min":9.207,"radial_velocity_km_s":0,"proper_motion_ra_mas_yr":-133.92,"proper_motion_dec_mas_yr":-57.9},"designations":[{"catalog":"HIP","designation":"HIP 64537"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","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."}