{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.665","julian_year":2026.665,"time":"2026-08-31T20:08:35.449Z","years_from_j2000":26.665,"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":"talitha","name":"Talitha","class":"a6_white_star","category":"star","object_type":"A6 white star","mag":3.12,"mag_band":"V","abs_mag":2.312,"abs_mag_band":"V","distance_ly":47.323985781188604,"distance_method":"parallax","ra_deg":134.80241999999998,"dec_deg":48.041826,"epoch_ra_deg":135.260592,"epoch_dec_deg":47.936137,"epoch_moved_arcsec":13.088,"pm_ra_mas_yr":-441.12,"pm_dec_mas_yr":-215.21,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Ursa Major","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/talitha","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"08592+4803","companions":[{"measured":2017,"magnitude":9.2,"components":"A,BC","discoverer_code":"HJ 2477","separation_arcsec":2.4,"position_angle_deg":90}],"spectral_type":"A6","color_index_bv":0.223,"luminosity_solar":10.356189770449859,"radial_velocity_km_s":9,"spectral_type_source":"SIMBAD (1985ApJS...59..197B, quality D)","surface_temperature_k":7907,"proper_motion_ra_mas_yr":-441.12,"proper_motion_dec_mas_yr":-215.21,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"9 Iota UMa"},{"catalog":"Common name","designation":"Talitha"},{"catalog":"Gliese","designation":"Gl 331A"},{"catalog":"HD","designation":"HD 76644"},{"catalog":"HIP","designation":"HIP 44127"},{"catalog":"HR","designation":"HR 3569"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}