{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.680","julian_year":2026.68,"time":"2026-09-06T07:44:51.168Z","years_from_j2000":26.68,"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-113319","name":"HD 113319","class":"g4v_yellow_main_sequence_star","category":"star","object_type":"G4V yellow main-sequence star","mag":7.51,"mag_band":"V","abs_mag":5.046,"abs_mag_band":"V","distance_ly":101.44833203777131,"distance_method":"parallax","ra_deg":195.639495,"dec_deg":32.433251,"epoch_ra_deg":195.957596,"epoch_dec_deg":32.289063,"epoch_moved_arcsec":5.289,"pm_ra_mas_yr":-192.85,"pm_dec_mas_yr":45.99,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Canes Venatici","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-113319","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"13026+3226","age_years":6947628000,"companions":[{"measured":2016,"magnitude":18.34,"components":null,"discoverer_code":"LEP  61","separation_arcsec":175.1,"position_angle_deg":294}],"mass_solar":0.946,"radius_solar":0.978,"spectral_type":"G4V","uncertainties":{"metallicity_fe_h":[0.113,0.113]},"color_index_bv":0.655,"luminosity_solar":0.8348337537236499,"metallicity_fe_h":-0.033,"radial_velocity_km_s":4.9,"spectral_type_source":"SIMBAD (2003AJ....126.2048G, quality C)","surface_gravity_log_g":4.418,"surface_temperature_k":5625,"metallicity_fe_h_source":"Median of 4 spectroscopic determinations in 4 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-192.85,"proper_motion_dec_mas_yr":45.99,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":0.8527},"designations":[{"catalog":"HD","designation":"HD 113319"},{"catalog":"HIP","designation":"HIP 63636"}],"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."}