{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T04:54:30.225Z","years_from_j2000":26.669,"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-92787","name":"HD 92787","class":"f5iii_yellow_white_giant","category":"star","object_type":"F5III yellow-white giant","mag":5.18,"mag_band":"V","abs_mag":2.334,"abs_mag_band":"V","distance_ly":120.97792362269446,"distance_method":"parallax","ra_deg":160.88733000000002,"dec_deg":46.203877,"epoch_ra_deg":161.281147,"epoch_dec_deg":46.06274,"epoch_moved_arcsec":7.366,"pm_ra_mas_yr":-268.17,"pm_dec_mas_yr":-66.06,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Ursa Major","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-92787","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10435+4612","age_years":1516106200,"companions":[{"measured":2018,"magnitude":11.11,"components":"AC","discoverer_code":"SMA  75","separation_arcsec":152,"position_angle_deg":16},{"measured":2018,"magnitude":7.35,"components":"AB","discoverer_code":"SMA  75","separation_arcsec":288,"position_angle_deg":88},{"measured":2018,"magnitude":9.18,"components":"AD","discoverer_code":"SMA  75","separation_arcsec":381.6,"position_angle_deg":45}],"mass_solar":1.616,"radius_solar":2.136,"spectral_type":"F5III","color_index_bv":0.324,"luminosity_solar":10.148456628180952,"radial_velocity_km_s":4,"spectral_type_source":"SIMBAD (quality D)","surface_gravity_log_g":3.901,"surface_temperature_k":6917,"proper_motion_ra_mas_yr":-268.17,"proper_motion_dec_mas_yr":-66.06,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":9.4642},"designations":[{"catalog":"HD","designation":"HD 92787"},{"catalog":"HIP","designation":"HIP 52469"},{"catalog":"HR","designation":"HR 4191"}],"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."}