{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T09:06:05.373Z","years_from_j2000":26.68,"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-62440","name":"HIP 62440","class":"f5p_yellow_white_star","category":"star","object_type":"F5p yellow-white star","mag":9.9,"mag_band":"V","abs_mag":3.787,"abs_mag_band":"V","distance_ly":544.5014386228396,"distance_method":"parallax","ra_deg":191.95495499999998,"dec_deg":45.645546,"epoch_ra_deg":192.269094,"epoch_dec_deg":45.498761,"epoch_moved_arcsec":0.886,"pm_ra_mas_yr":-31.51,"pm_dec_mas_yr":-10.52,"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-62440","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"12478+4539","age_years":3632095600,"companions":[{"measured":2016,"magnitude":11.67,"components":null,"discoverer_code":"COU2104","separation_arcsec":1.5,"position_angle_deg":306}],"mass_solar":1.165,"radius_solar":1.322,"spectral_type":"F5p","color_index_bv":0.558,"luminosity_solar":2.661950651151837,"variable_mag_max":9.832,"variable_mag_min":9.952,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1938BSD...C02....0S, quality E)","surface_gravity_log_g":4.209,"surface_temperature_k":6182,"proper_motion_ra_mas_yr":-31.51,"proper_motion_dec_mas_yr":-10.52,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":2.2835},"designations":[{"catalog":"HIP","designation":"HIP 62440"}],"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."}