{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T09:19:02.841Z","years_from_j2000":26.666,"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-45352","name":"HD 45352","class":"k2iii_iv_orange_giant","category":"star","object_type":"K2III-IV orange giant","mag":6.54,"mag_band":"V","abs_mag":0.361,"abs_mag_band":"V","distance_ly":561.3705726347272,"distance_method":"parallax","ra_deg":96.944025,"dec_deg":20.789509,"epoch_ra_deg":97.344135,"epoch_dec_deg":20.772884,"epoch_moved_arcsec":1.49,"pm_ra_mas_yr":-32.66,"pm_dec_mas_yr":-45.34,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Gemini","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-45352","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"06278+2047","companions":[{"measured":2019,"magnitude":8.18,"components":"AB","discoverer_code":"SHJ  70","separation_arcsec":24.7,"position_angle_deg":202},{"measured":2015,"magnitude":12.74,"components":"AC","discoverer_code":"SHJ  70","separation_arcsec":85.6,"position_angle_deg":35},{"measured":2015,"magnitude":12.74,"components":"AD","discoverer_code":"JRN  28","separation_arcsec":90.3,"position_angle_deg":51},{"measured":2015,"magnitude":13.65,"components":"AE","discoverer_code":"JRN  28","separation_arcsec":113.6,"position_angle_deg":44},{"measured":2015,"magnitude":13.71,"components":"AF","discoverer_code":"JRN  28","separation_arcsec":119.3,"position_angle_deg":33}],"spectral_type":"K2III-IV","color_index_bv":1.246,"luminosity_solar":62.45971525332756,"radial_velocity_km_s":-30.1,"spectral_type_source":"SIMBAD (2003AJ....126.2048G, quality C)","proper_motion_ra_mas_yr":-32.66,"proper_motion_dec_mas_yr":-45.34},"designations":[{"catalog":"HD","designation":"HD 45352"},{"catalog":"HIP","designation":"HIP 30757"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}