{"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":"2026-08-27T17:05:51.019Z","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-35708","name":"114 Tau","class":"b2_5v_blue_white_main_sequence_star","category":"star","object_type":"B2.5V blue-white main-sequence star","mag":4.88,"mag_band":"V","abs_mag":-1.532,"abs_mag_band":"V","distance_ly":624.8207081993648,"distance_method":"parallax","ra_deg":81.908685,"dec_deg":21.936965,"epoch_ra_deg":82.312167,"epoch_dec_deg":21.959716,"epoch_moved_arcsec":0.191,"pm_ra_mas_yr":1.75,"pm_dec_mas_yr":-6.96,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Taurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-35708","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05276+2156","companions":[{"measured":1901,"magnitude":5.6,"components":"Aa,Ab","discoverer_code":"OCC   1","separation_arcsec":0.1,"position_angle_deg":-1},{"measured":2000,"magnitude":10.9,"components":"AB","discoverer_code":"HJ  365","separation_arcsec":37.5,"position_angle_deg":348},{"measured":2000,"magnitude":11.51,"components":"AC","discoverer_code":"HJ  365","separation_arcsec":59.4,"position_angle_deg":193},{"measured":2000,"magnitude":13.07,"components":"AD","discoverer_code":"HJ  365","separation_arcsec":73.8,"position_angle_deg":280}],"spectral_type":"B2.5V","color_index_bv":-0.14,"luminosity_solar":357.1083458083457,"radial_velocity_km_s":13,"spectral_type_source":"SIMBAD (2008ApJS..176..216A, quality C)","proper_motion_ra_mas_yr":1.75,"proper_motion_dec_mas_yr":-6.96},"designations":[{"catalog":"Bayer/Flamsteed","designation":"114 Tau"},{"catalog":"HD","designation":"HD 35708"},{"catalog":"HIP","designation":"HIP 25539"},{"catalog":"HR","designation":"HR 1810"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T16:03:54.983Z","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."}