{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T08:27:16.091Z","years_from_j2000":26.677,"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-326915","name":"HD 326915","class":"f2_yellow_white_star","category":"star","object_type":"F2 yellow-white star","mag":9.67,"mag_band":"V","abs_mag":2.365,"abs_mag_band":"V","distance_ly":942.6483566547334,"distance_method":"parallax","ra_deg":256.670415,"dec_deg":-43.83805,"epoch_ra_deg":257.153862,"epoch_dec_deg":-43.874288,"epoch_moved_arcsec":0.653,"pm_ra_mas_yr":-14.04,"pm_dec_mas_yr":-20.05,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Scorpius","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-326915","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"17067-4350","companions":[{"measured":2022,"magnitude":10.43,"components":null,"discoverer_code":"B  1844","separation_arcsec":0.9,"position_angle_deg":223},{"measured":2016,"magnitude":10.43,"components":"AB,CD","discoverer_code":"DAM2523","separation_arcsec":23.1,"position_angle_deg":142}],"spectral_type":"F2","color_index_bv":0.505,"luminosity_solar":9.8627948563121,"variable_mag_max":9.569,"variable_mag_min":9.719,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1995A&AS..110..367N, quality E)","proper_motion_ra_mas_yr":-14.04,"proper_motion_dec_mas_yr":-20.05},"designations":[{"catalog":"HD","designation":"HD 326915"},{"catalog":"HIP","designation":"HIP 83723"}],"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."}