{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T23:56:16.106Z","years_from_j2000":26.687,"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-211495","name":"HD 211495","class":"a0_white_star","category":"star","object_type":"A0 white star","mag":8.83,"mag_band":"V","abs_mag":2.149,"abs_mag_band":"V","distance_ly":707.4974360740267,"distance_method":"parallax","ra_deg":334.114095,"dec_deg":47.975721,"epoch_ra_deg":334.383765,"epoch_dec_deg":48.109488,"epoch_moved_arcsec":0.117,"pm_ra_mas_yr":-1.85,"pm_dec_mas_yr":3.98,"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-211495","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"22165+4759","companions":[{"measured":2020,"magnitude":9.79,"components":"AB","discoverer_code":"STF2891","separation_arcsec":12.8,"position_angle_deg":308},{"measured":2020,"magnitude":10.43,"components":"AC","discoverer_code":"BOT   5","separation_arcsec":57.7,"position_angle_deg":106}],"spectral_type":"A0","color_index_bv":0.085,"luminosity_solar":12.033722711826842,"variable_mag_max":8.779,"variable_mag_min":8.979,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","proper_motion_ra_mas_yr":-1.85,"proper_motion_dec_mas_yr":3.98},"designations":[{"catalog":"HD","designation":"HD 211495"},{"catalog":"HIP","designation":"HIP 109974"}],"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."}