{"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":"2026-09-04T16:16:35.078Z","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":"hd-80545","name":"HD 80545","class":"k6_5vk_orange_dwarf","category":"star","object_type":"K6.5Vk: orange dwarf","mag":9.52,"mag_band":"V","abs_mag":7.694,"abs_mag_band":"V","distance_ly":75.62163926827098,"distance_method":"parallax","ra_deg":139.537185,"dec_deg":-57.768877,"epoch_ra_deg":139.723413,"epoch_dec_deg":-57.877809,"epoch_moved_arcsec":12.797,"pm_ra_mas_yr":-85.82,"pm_dec_mas_yr":472.01,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Carina","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-80545","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"09181-5746","companions":[{"measured":2016,"magnitude":15,"components":null,"discoverer_code":"SKF 428","separation_arcsec":3.1,"position_angle_deg":147}],"radius_solar":0.678,"spectral_type":"K6.5Vk:","color_index_bv":1.185,"luminosity_solar":0.07284504232923297,"radial_velocity_km_s":24,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","surface_gravity_log_g":4.609,"surface_temperature_k":4258,"proper_motion_ra_mas_yr":-85.82,"proper_motion_dec_mas_yr":472.01,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.1369},"designations":[{"catalog":"Gliese","designation":"GJ 3551"},{"catalog":"HD","designation":"HD 80545"},{"catalog":"HIP","designation":"HIP 45637"}],"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."}