{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T18:23:44.417Z","years_from_j2000":26.676,"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-23588","name":"HD 23588","class":"k5v_m3v_orange_dwarf","category":"star","object_type":"K5V+M3V orange dwarf","mag":8.21,"mag_band":"V","abs_mag":6.541,"abs_mag_band":"V","distance_ly":70.33790594925973,"distance_method":"parallax","ra_deg":56.350455,"dec_deg":-27.862479,"epoch_ra_deg":56.632139,"epoch_dec_deg":-27.776991,"epoch_moved_arcsec":9.342,"pm_ra_mas_yr":320.9,"pm_dec_mas_yr":140.23,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Fornax","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-23588","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"03454-2752","companions":[{"measured":2023,"magnitude":11.12,"components":null,"discoverer_code":"BU 1003","separation_arcsec":1.5,"position_angle_deg":268}],"spectral_type":"K5V+M3V","color_index_bv":1.012,"luminosity_solar":0.21066869257394133,"radial_velocity_km_s":32.9,"spectral_type_source":"SIMBAD (1976AJ.....81..245E, quality C)","surface_temperature_k":4740,"proper_motion_ra_mas_yr":320.9,"proper_motion_dec_mas_yr":140.23,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Gliese","designation":"Gl 154.1A"},{"catalog":"HD","designation":"HD 23588"},{"catalog":"HIP","designation":"HIP 17544"}],"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."}