{"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":"2026-09-05T00:28:13.700Z","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":"titawin","name":"Titawin","class":"f9v_yellow_white_main_sequence_star","category":"star","object_type":"F9V yellow-white main-sequence star","mag":4.1,"mag_band":"V","abs_mag":3.45,"abs_mag_band":"V","distance_ly":44.00371385603216,"distance_method":"parallax","ra_deg":24.199485,"dec_deg":41.405459,"epoch_ra_deg":24.594649,"epoch_dec_deg":41.539753,"epoch_moved_arcsec":11.158,"pm_ra_mas_yr":-172.57,"pm_dec_mas_yr":-381.01,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/titawin","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"01368+4124","companions":[{"measured":2016,"magnitude":13.6,"components":"AD","discoverer_code":"LWR   1","separation_arcsec":55.6,"position_angle_deg":149},{"measured":2015,"magnitude":12.6,"components":"AB","discoverer_code":"BUP  23","separation_arcsec":110.9,"position_angle_deg":106},{"measured":2015,"magnitude":10.37,"components":"AC","discoverer_code":"STT 554","separation_arcsec":272.2,"position_angle_deg":291}],"spectral_type":"F9V","uncertainties":{"metallicity_fe_h":[0.092,0.092]},"color_index_bv":0.536,"luminosity_solar":3.630780547701012,"metallicity_fe_h":0.095,"radial_velocity_km_s":-28.7,"spectral_type_source":"SIMBAD (2009ApJS..180..117A, quality C)","surface_gravity_log_g":4.17,"surface_temperature_k":6155,"metallicity_fe_h_source":"Median of 32 spectroscopic determinations in 39 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-172.57,"proper_motion_dec_mas_yr":-381.01,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"50 Upsilon And"},{"catalog":"Common name","designation":"Titawin"},{"catalog":"Exoplanet host","designation":"υ And"},{"catalog":"Gliese","designation":"Gl 61"},{"catalog":"HD","designation":"HD 9826"},{"catalog":"HIP","designation":"HIP 7513"},{"catalog":"HR","designation":"HR 458"}],"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."}