{"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":"2026-09-04T22:27:56.825Z","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-285465","name":"HD 285465","class":"k3_orange_star","category":"star","object_type":"K3 orange star","mag":9.07,"mag_band":"V","abs_mag":6.225,"abs_mag_band":"V","distance_ly":120.88823061882238,"distance_method":"parallax","ra_deg":62.55852,"dec_deg":17.368432,"epoch_ra_deg":62.947196,"epoch_dec_deg":17.43779,"epoch_moved_arcsec":11.778,"pm_ra_mas_yr":414.43,"pm_dec_mas_yr":-152.23,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Taurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-285465","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"04102+1722","companions":[{"measured":2022,"magnitude":10.93,"components":null,"discoverer_code":"HEI  35","separation_arcsec":0.3,"position_angle_deg":302}],"spectral_type":"K3","color_index_bv":1.07,"luminosity_solar":0.28183829312644537,"metallicity_fe_h":0.08,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1985ApJS...59..197B, quality D)","surface_gravity_log_g":4.29,"surface_temperature_k":4597,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":414.43,"proper_motion_dec_mas_yr":-152.23,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 285465"},{"catalog":"HIP","designation":"HIP 19472"}],"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."}