{"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":"2026-08-27T17:05:48.254Z","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-214680","name":"10 Lac","class":"o9v_blue_main_sequence_star","category":"star","object_type":"O9V blue main-sequence star","mag":4.89,"mag_band":"V","abs_mag":-3.728,"abs_mag_band":"V","distance_ly":1725.695025281178,"distance_method":"parallax","ra_deg":339.815325,"dec_deg":39.050269,"epoch_ra_deg":340.115863,"epoch_dec_deg":39.189836,"epoch_moved_arcsec":0.152,"pm_ra_mas_yr":-0.29,"pm_dec_mas_yr":-5.7,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Lacerta","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-214680","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"22393+3903","companions":[{"measured":2001,"magnitude":14.7,"components":"AC","discoverer_code":"TRN  36","separation_arcsec":3.6,"position_angle_deg":85},{"measured":2016,"magnitude":10.3,"components":"AB","discoverer_code":"S   813","separation_arcsec":62.6,"position_angle_deg":47}],"radius_solar":9.362,"spectral_type":"O9V","color_index_bv":-0.207,"luminosity_solar":2698.9820734720156,"radial_velocity_km_s":-10,"spectral_type_source":"SIMBAD (2011ApJS..193...24S, quality C)","surface_gravity_log_g":3.605,"surface_temperature_k":24258,"proper_motion_ra_mas_yr":-0.29,"proper_motion_dec_mas_yr":-5.7,"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"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"10 Lac"},{"catalog":"HD","designation":"HD 214680"},{"catalog":"HIP","designation":"HIP 111841"},{"catalog":"HR","designation":"HR 8622"}],"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."}