{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T19:36:41.272Z","years_from_j2000":26.654,"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-174115","name":"HD 174115","class":"a1ma5_f2_white_star","category":"star","object_type":"A1mA5-F2 white star","mag":6.77,"mag_band":"V","abs_mag":1.336,"abs_mag_band":"V","distance_ly":398.2372633485214,"distance_method":"parallax","ra_deg":282.39732000000004,"dec_deg":-19.142342,"epoch_ra_deg":282.791995,"epoch_dec_deg":-19.112027,"epoch_moved_arcsec":0.105,"pm_ra_mas_yr":-3.41,"pm_dec_mas_yr":-1.98,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Sagittarius","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-174115","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"18496-1909","age_years":875441130,"companions":[{"measured":1976,"magnitude":7.2,"components":"AB","discoverer_code":"OCC 455","separation_arcsec":0.2,"position_angle_deg":-1}],"mass_solar":1.947,"radius_solar":2.385,"spectral_type":"A1mA5-F2","color_index_bv":0.192,"luminosity_solar":25.44485615146634,"radial_velocity_km_s":-43,"spectral_type_source":"SIMBAD (1988MSS...C04....0H, quality C)","surface_gravity_log_g":3.903,"surface_temperature_k":7898,"proper_motion_ra_mas_yr":-3.41,"proper_motion_dec_mas_yr":-1.98,"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":20.4486},"designations":[{"catalog":"HD","designation":"HD 174115"},{"catalog":"HIP","designation":"HIP 92384"},{"catalog":"HR","designation":"HR 7077"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T19:16:43.430Z","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."}