{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.673","julian_year":2026.673,"time":"2026-09-03T22:57:06.919Z","years_from_j2000":26.673,"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-7459","name":"HIP 7459","class":"g0_yellow_star","category":"star","object_type":"G0 yellow star","mag":10.1,"mag_band":"V","abs_mag":5.281,"abs_mag_band":"V","distance_ly":300.05179971342847,"distance_method":"parallax","ra_deg":24.024585000000002,"dec_deg":-61.084304,"epoch_ra_deg":24.260824,"epoch_dec_deg":-60.951951,"epoch_moved_arcsec":18.149,"pm_ra_mas_yr":-78.73,"pm_dec_mas_yr":-675.86,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Hydrus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-7459","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"radius_solar":0.87,"spectral_type":"G0","uncertainties":{"metallicity_fe_h":[0.037,0.037]},"color_index_bv":0.524,"luminosity_solar":0.672357107234319,"metallicity_fe_h":-1.232,"variable_mag_max":10.044,"variable_mag_min":10.174,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2000A&A...353..722N, quality D)","surface_gravity_log_g":4.422,"surface_temperature_k":6077,"metallicity_fe_h_source":"Median of 6 spectroscopic determinations in 7 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-78.73,"proper_motion_dec_mas_yr":-675.86,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.9322},"designations":[{"catalog":"HIP","designation":"HIP 7459"}],"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."}