{"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":"2026-09-02T08:10:14.316Z","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-76378","name":"HD 76378","class":"k2vcn_1_orange_dwarf","category":"star","object_type":"K2VCN+1 orange dwarf","mag":8.66,"mag_band":"V","abs_mag":6.193,"abs_mag_band":"V","distance_ly":101.57455455594769,"distance_method":"parallax","ra_deg":133.73859,"dec_deg":-24.394289,"epoch_ra_deg":134.030123,"epoch_dec_deg":-24.495157,"epoch_moved_arcsec":9.898,"pm_ra_mas_yr":-341.27,"pm_dec_mas_yr":145.9,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pyxis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-76378","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"radius_solar":0.873,"spectral_type":"K2VCN+1","color_index_bv":1.022,"luminosity_solar":0.2902685610499053,"radial_velocity_km_s":63.3,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","surface_gravity_log_g":4.51,"surface_temperature_k":4919,"proper_motion_ra_mas_yr":-341.27,"proper_motion_dec_mas_yr":145.9,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.4028},"designations":[{"catalog":"Gliese","designation":"Gl 329"},{"catalog":"HD","designation":"HD 76378"},{"catalog":"HIP","designation":"HIP 43771"}],"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."}