{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.664","julian_year":2026.664,"time":"2026-08-31T15:45:21.581Z","years_from_j2000":26.664,"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":"bunda","name":"Bunda","class":"k0iii_orange_giant","category":"star","object_type":"K0III orange giant","mag":4.68,"mag_band":"V","abs_mag":0.988,"abs_mag_band":"V","distance_ly":178.61790947468594,"distance_method":"parallax","ra_deg":324.43795500000004,"dec_deg":-7.854201,"epoch_ra_deg":324.794884,"epoch_dec_deg":-7.733876,"epoch_moved_arcsec":3.116,"pm_ra_mas_yr":114.29,"pm_dec_mas_yr":-24.44,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Aquarius","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/bunda","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"21378-0751","companions":[{"measured":2014,"magnitude":14,"components":"AC","discoverer_code":"DRS  67","separation_arcsec":375.5,"position_angle_deg":222}],"spectral_type":"K0III","color_index_bv":0.175,"luminosity_solar":35.05903839326127,"metallicity_fe_h":-0.03,"radial_velocity_km_s":-21,"spectral_type_source":"SIMBAD (1999MSS...C05....0H, quality C)","surface_gravity_log_g":3.76,"surface_temperature_k":7808,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":114.29,"proper_motion_dec_mas_yr":-24.44,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"23 Xi Aqr"},{"catalog":"Common name","designation":"Bunda"},{"catalog":"HD","designation":"HD 205767"},{"catalog":"HIP","designation":"HIP 106786"},{"catalog":"HR","designation":"HR 8264"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}