{"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":"2026-09-02T01:23:14.064Z","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-294145","name":"HD 294145","class":"ka7ha9mf0_white_star","category":"star","object_type":"kA7hA9mF0 white star","mag":9.98,"mag_band":"V","abs_mag":1.807,"abs_mag_band":"V","distance_ly":1405.8465119094762,"distance_method":"parallax","ra_deg":81.671325,"dec_deg":-5.156742,"epoch_ra_deg":82.002047,"epoch_dec_deg":-5.133257,"epoch_moved_arcsec":0.109,"pm_ra_mas_yr":2.29,"pm_dec_mas_yr":-3.38,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Orion","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-294145","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05267-0509","age_years":1175286400,"companions":[{"measured":2015,"magnitude":12.02,"components":null,"discoverer_code":"HJ 2265","separation_arcsec":21.6,"position_angle_deg":252}],"mass_solar":1.671,"radius_solar":1.95,"spectral_type":"kA7hA9mF0","color_index_bv":0.35,"luminosity_solar":16.489215731508327,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2023ApJS..266...14T, quality D)","surface_gravity_log_g":4.008,"surface_temperature_k":7368,"proper_motion_ra_mas_yr":2.29,"proper_motion_dec_mas_yr":-3.38,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":10.3718},"designations":[{"catalog":"HD","designation":"HD 294145"},{"catalog":"HIP","designation":"HIP 25457"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}