{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T16:24:45.341Z","years_from_j2000":26.684,"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-144415","name":"HD 144415","class":"f0_2v_yellow_white_main_sequence_star","category":"star","object_type":"F0/2V yellow-white main-sequence star","mag":5.72,"mag_band":"V","abs_mag":2.026,"abs_mag_band":"V","distance_ly":178.71575638800098,"distance_method":"parallax","ra_deg":241.81752,"dec_deg":-36.755676,"epoch_ra_deg":242.260273,"epoch_dec_deg":-36.828264,"epoch_moved_arcsec":2.058,"pm_ra_mas_yr":52.54,"pm_dec_mas_yr":-56.45,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Lupus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-144415","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"16073-3645","companions":[{"measured":2015,"magnitude":11.84,"components":null,"discoverer_code":"HJ 4831","separation_arcsec":40.4,"position_angle_deg":358}],"spectral_type":"F0/2V","color_index_bv":0.298,"luminosity_solar":13.477210138513502,"radial_velocity_km_s":26,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality D)","proper_motion_ra_mas_yr":52.54,"proper_motion_dec_mas_yr":-56.45},"designations":[{"catalog":"HD","designation":"HD 144415"},{"catalog":"HIP","designation":"HIP 78970"},{"catalog":"HR","designation":"HR 5991"}],"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."}