{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.668","julian_year":2026.668,"time":"2026-09-01T19:23:59.616Z","years_from_j2000":26.668,"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-111908","name":"HD 111908","class":"c2_1_ch5_red_star","category":"star","object_type":"C2,1_CH5 red star","mag":9.36,"mag_band":"V","abs_mag":2.572,"abs_mag_band":"V","distance_ly":742.9529174264807,"distance_method":"parallax","ra_deg":193.122585,"dec_deg":7.207938,"epoch_ra_deg":193.462442,"epoch_dec_deg":7.062171,"epoch_moved_arcsec":0.908,"pm_ra_mas_yr":-15.28,"pm_dec_mas_yr":30.44,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Virgo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-111908","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"12525+0712","companions":[{"measured":2015,"magnitude":15.11,"components":"AD","discoverer_code":"ABH  80","separation_arcsec":19.4,"position_angle_deg":10},{"measured":2022,"magnitude":9.51,"components":"AB","discoverer_code":"HJ 2621","separation_arcsec":32.9,"position_angle_deg":87},{"measured":2022,"magnitude":11.42,"components":"AC","discoverer_code":"HJ 2621","separation_arcsec":39.1,"position_angle_deg":131}],"spectral_type":"C2,1_CH5","color_index_bv":1.377,"luminosity_solar":8.150795556116012,"radial_velocity_km_s":34.1,"spectral_type_source":"SIMBAD (1972AnTok..13..169Y, quality C)","proper_motion_ra_mas_yr":-15.28,"proper_motion_dec_mas_yr":30.44},"designations":[{"catalog":"HD","designation":"HD 111908"},{"catalog":"HIP","designation":"HIP 62827"}],"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."}