{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T20:06:58.697Z","years_from_j2000":26.681,"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-2626","name":"HD 2626","class":"b7iv_blue_white_subgiant","category":"star","object_type":"B7IV blue-white subgiant","mag":5.94,"mag_band":"V","abs_mag":-0.923,"abs_mag_band":"V","distance_ly":769.2368814375399,"distance_method":"parallax","ra_deg":7.583010000000001,"dec_deg":59.977554,"epoch_ra_deg":7.958629,"epoch_dec_deg":60.126027,"epoch_moved_arcsec":0.446,"pm_ra_mas_yr":16.26,"pm_dec_mas_yr":-3.94,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Cassiopeia","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-2626","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"00303+5959","companions":[{"measured":2009,"magnitude":8.45,"components":"AB","discoverer_code":"BU 1094","separation_arcsec":0.3,"position_angle_deg":285},{"measured":2015,"magnitude":11.7,"components":"AC","discoverer_code":"BU 1094","separation_arcsec":121,"position_angle_deg":338}],"spectral_type":"B7IV","color_index_bv":-0.003,"luminosity_solar":203.79803862870568,"radial_velocity_km_s":-17,"spectral_type_source":"SIMBAD (1970MmRAS..72..233H, quality C)","surface_gravity_log_g":3.39,"surface_temperature_k":13047,"proper_motion_ra_mas_yr":16.26,"proper_motion_dec_mas_yr":-3.94,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 2626"},{"catalog":"HIP","designation":"HIP 2377"},{"catalog":"HR","designation":"HR 113"}],"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."}