{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-02T21:50:39.331Z","years_from_j2000":26.671,"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-250792","name":"HD 250792","class":"g1_yellow_star","category":"star","object_type":"G1 yellow star","mag":9.28,"mag_band":"V","abs_mag":5.408,"abs_mag_band":"V","distance_ly":194.0252106016472,"distance_method":"parallax","ra_deg":90.81182999999999,"dec_deg":19.360743,"epoch_ra_deg":91.213607,"epoch_dec_deg":19.355779,"epoch_moved_arcsec":24.337,"pm_ra_mas_yr":666.6,"pm_dec_mas_yr":-623.13,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Orion","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-250792","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"06032+1922","companions":[{"measured":2024,"magnitude":11.67,"components":"Aa,Ab","discoverer_code":"HDS 823","separation_arcsec":0.1,"position_angle_deg":91},{"measured":2015,"magnitude":13.05,"components":"AC","discoverer_code":"TOK 105","separation_arcsec":5.2,"position_angle_deg":211},{"measured":2016,"magnitude":13.5,"components":"AB","discoverer_code":"LDS6195","separation_arcsec":6.8,"position_angle_deg":228}],"spectral_type":"G1","uncertainties":{"metallicity_fe_h":[0.109,0.109]},"color_index_bv":0.646,"luminosity_solar":0.5981360797812738,"metallicity_fe_h":-1.02,"radial_velocity_km_s":-190,"spectral_type_source":"SIMBAD (1985ApJS...59..197B, quality D)","surface_gravity_log_g":4.47,"surface_temperature_k":5464,"metallicity_fe_h_source":"Median of 9 spectroscopic determinations in 14 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":666.6,"proper_motion_dec_mas_yr":-623.13,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 250792"},{"catalog":"HIP","designation":"HIP 28671"}],"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."}