{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T14:23:56.423Z","years_from_j2000":26.683,"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-81697","name":"HD 81697","class":"g8_k1_yellow_star","category":"star","object_type":"G8/K1 yellow star","mag":9.11,"mag_band":"V","abs_mag":4.412,"abs_mag_band":"V","distance_ly":283.86107096719155,"distance_method":"parallax","ra_deg":141.17782499999998,"dec_deg":-60.922838,"epoch_ra_deg":141.352214,"epoch_dec_deg":-61.039189,"epoch_moved_arcsec":5.409,"pm_ra_mas_yr":136.84,"pm_dec_mas_yr":-149.57,"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-81697","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"09247-6055","companions":[{"measured":1991,"magnitude":12.18,"components":null,"discoverer_code":"HDS1352","separation_arcsec":1.5,"position_angle_deg":43}],"spectral_type":"G8/K1","color_index_bv":0.739,"luminosity_solar":1.4969248567600366,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality E)","surface_temperature_k":5392,"proper_motion_ra_mas_yr":136.84,"proper_motion_dec_mas_yr":-149.57,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 81697"},{"catalog":"HIP","designation":"HIP 46151"}],"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."}