{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T16:08:33.908Z","years_from_j2000":26.67,"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-1562","name":"HD 1562","class":"g1v_yellow_main_sequence_star","category":"star","object_type":"G1V yellow main-sequence star","mag":6.97,"mag_band":"V","abs_mag":4.998,"abs_mag_band":"V","distance_ly":80.8717784803774,"distance_method":"parallax","ra_deg":5.0017949999999995,"dec_deg":38.227397,"epoch_ra_deg":5.353323,"epoch_dec_deg":38.374423,"epoch_moved_arcsec":8.274,"pm_ra_mas_yr":-140.89,"pm_dec_mas_yr":-276.39,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-1562","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"00200+3814","age_years":3972013500,"companions":[{"measured":2016,"magnitude":13.6,"components":"AC","discoverer_code":"S   384","separation_arcsec":19.8,"position_angle_deg":272},{"measured":2015,"magnitude":14.8,"components":"AE","discoverer_code":"FYM 147","separation_arcsec":38.9,"position_angle_deg":219},{"measured":2015,"magnitude":15.8,"components":"AF","discoverer_code":"FYM 147","separation_arcsec":47.9,"position_angle_deg":14},{"measured":2015,"magnitude":15.4,"components":"AD","discoverer_code":"FYM 147","separation_arcsec":77.6,"position_angle_deg":330},{"measured":2015,"magnitude":10.3,"components":"AB","discoverer_code":"S   384","separation_arcsec":104,"position_angle_deg":22}],"mass_solar":0.984,"radius_solar":0.957,"spectral_type":"G1V","uncertainties":{"metallicity_fe_h":[0.029,0.029]},"color_index_bv":0.64,"luminosity_solar":0.8725694427701158,"metallicity_fe_h":-0.32,"radial_velocity_km_s":9,"spectral_type_source":"SIMBAD (2003AJ....126.2048G, quality C)","surface_gravity_log_g":4.421,"surface_temperature_k":5688,"metallicity_fe_h_source":"Median of 3 spectroscopic determinations in 6 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-140.89,"proper_motion_dec_mas_yr":-276.39,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.8562},"designations":[{"catalog":"HD","designation":"HD 1562"},{"catalog":"HIP","designation":"HIP 1598"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}