{"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":"2026-09-03T08:14:34.645Z","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":"hip-59445","name":"HIP 59445","class":"g0_yellow_star","category":"star","object_type":"G0 yellow star","mag":9.7,"mag_band":"V","abs_mag":5.005,"abs_mag_band":"V","distance_ly":283.36792252408384,"distance_method":"parallax","ra_deg":182.89368,"dec_deg":36.096247,"epoch_ra_deg":183.234089,"epoch_dec_deg":35.94653,"epoch_moved_arcsec":1.875,"pm_ra_mas_yr":55.45,"pm_dec_mas_yr":-43.22,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Canes Venatici","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-59445","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"12116+3605","companions":[{"measured":2017,"magnitude":14.06,"components":"BC","discoverer_code":"STF1607","separation_arcsec":20.4,"position_angle_deg":310}],"spectral_type":"G0","luminosity_solar":0.8669618757582165,"variable_mag_max":9.575,"variable_mag_min":9.775,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1960UppAn...4i...1M, quality E)","proper_motion_ra_mas_yr":55.45,"proper_motion_dec_mas_yr":-43.22},"designations":[{"catalog":"HIP","designation":"HIP 59445"}],"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."}