{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T05:28:12.643Z","years_from_j2000":26.671,"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":"hd-158352","name":"HD 158352","class":"a8vp_white_main_sequence_star","category":"star","object_type":"A8Vp white main-sequence star","mag":5.41,"mag_band":"V","abs_mag":1.533,"abs_mag_band":"V","distance_ly":194.48802650162725,"distance_method":"parallax","ra_deg":262.2069,"dec_deg":0.330625,"epoch_ra_deg":262.549634,"epoch_dec_deg":0.308667,"epoch_moved_arcsec":1.806,"pm_ra_mas_yr":-64.73,"pm_dec_mas_yr":19.86,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Ophiuchus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-158352","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"17288+0020","age_years":1004361300,"companions":[{"measured":2015,"magnitude":9.75,"components":null,"discoverer_code":"WFC 193","separation_arcsec":46.8,"position_angle_deg":316}],"mass_solar":1.961,"radius_solar":2.872,"spectral_type":"A8Vp","color_index_bv":0.237,"luminosity_solar":21.222668969007817,"radial_velocity_km_s":-36,"spectral_type_source":"SIMBAD (2001A&A...378..116M, quality C)","surface_gravity_log_g":3.667,"surface_temperature_k":7427,"proper_motion_ra_mas_yr":-64.73,"proper_motion_dec_mas_yr":19.86,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":22.2259},"designations":[{"catalog":"HD","designation":"HD 158352"},{"catalog":"HIP","designation":"HIP 85537"},{"catalog":"HR","designation":"HR 6507"}],"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."}