{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T10:38:49.780Z","years_from_j2000":26.672,"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-192031","name":"HD 192031","class":"k2vfe_1_8ch_1_2_orange_dwarf","category":"star","object_type":"K2VFe-1.8CH-1.2 orange dwarf","mag":8.67,"mag_band":"V","abs_mag":6.017,"abs_mag_band":"V","distance_ly":110.67399133786711,"distance_method":"parallax","ra_deg":303.34413,"dec_deg":-15.432108,"epoch_ra_deg":303.72036,"epoch_dec_deg":-15.35342,"epoch_moved_arcsec":11.15,"pm_ra_mas_yr":-322.12,"pm_dec_mas_yr":-266.44,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Capricornus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-192031","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"20134-1526","companions":[{"measured":2016,"magnitude":9.4,"components":null,"discoverer_code":"KUI  96","separation_arcsec":9.7,"position_angle_deg":345}],"radius_solar":0.763,"spectral_type":"K2VFe-1.8CH-1.2","uncertainties":{"metallicity_fe_h":[0.049,0.049]},"color_index_bv":0.732,"luminosity_solar":0.3413500729493109,"metallicity_fe_h":-0.83,"radial_velocity_km_s":20.8,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","surface_gravity_log_g":4.528,"surface_temperature_k":5255,"metallicity_fe_h_source":"Median of 5 spectroscopic determinations in 5 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-322.12,"proper_motion_dec_mas_yr":-266.44,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.4},"designations":[{"catalog":"HD","designation":"HD 192031"},{"catalog":"HIP","designation":"HIP 99651"}],"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."}