{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T04:36:04.800Z","years_from_j2000":26.677,"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-144965","name":"HD 144965","class":"b3vne_blue_white_main_sequence_star","category":"star","object_type":"B3Vne blue-white main-sequence star","mag":7.07,"mag_band":"V","abs_mag":-0.142,"abs_mag_band":"V","distance_ly":903.4802372547298,"distance_method":"parallax","ra_deg":242.54398500000002,"dec_deg":-40.128829,"epoch_ra_deg":242.999392,"epoch_dec_deg":-40.199344,"epoch_moved_arcsec":0.291,"pm_ra_mas_yr":-6.28,"pm_dec_mas_yr":-8.92,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Scorpius","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-144965","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"16102-4008","companions":[{"measured":1964,"magnitude":8.1,"components":"AB","discoverer_code":"I  1082","separation_arcsec":0.1,"position_angle_deg":265},{"measured":2017,"magnitude":12.2,"components":"AB,C","discoverer_code":"DAW 145","separation_arcsec":2.6,"position_angle_deg":141},{"measured":2015,"magnitude":14,"components":"AD","discoverer_code":"I  1082","separation_arcsec":37.8,"position_angle_deg":97}],"mass_solar":4.836,"radius_solar":3.677,"spectral_type":"B3Vne","color_index_bv":0.145,"luminosity_solar":99.2658806871031,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality C)","surface_gravity_log_g":3.954,"surface_temperature_k":15707,"proper_motion_ra_mas_yr":-6.28,"proper_motion_dec_mas_yr":-8.92,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate","bolometric_luminosity_solar":662.6537},"designations":[{"catalog":"HD","designation":"HD 144965"},{"catalog":"HIP","designation":"HIP 79230"}],"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."}