{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T13:33:24.256Z","years_from_j2000":26.675,"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-59238","name":"HIP 59238","class":"k0v_orange_dwarf","category":"star","object_type":"K0V orange dwarf","mag":10.69,"mag_band":"V","abs_mag":5.819,"abs_mag_band":"V","distance_ly":307.4046690926747,"distance_method":"parallax","ra_deg":182.25819,"dec_deg":18.321454,"epoch_ra_deg":182.600025,"epoch_dec_deg":18.171509,"epoch_moved_arcsec":3.606,"pm_ra_mas_yr":-119.37,"pm_dec_mas_yr":-63.44,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Coma Berenices","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-59238","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"mass_solar":0.813,"radius_solar":0.877,"spectral_type":"K0V","color_index_bv":0.84,"luminosity_solar":0.40963777636967946,"variable_mag_max":10.614,"variable_mag_min":10.754,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2018MNRAS.481.3244G, quality C)","surface_gravity_log_g":4.517,"surface_temperature_k":5112,"proper_motion_ra_mas_yr":-119.37,"proper_motion_dec_mas_yr":-63.44,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.474},"designations":[{"catalog":"HIP","designation":"HIP 59238"}],"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."}