{"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":"2026-08-31T09:43:10.087Z","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":"hd-71066","name":"κ² Vol","class":"b9_a0iv_blue_white_subgiant","category":"star","object_type":"B9/A0IV blue-white subgiant","mag":5.63,"mag_band":"V","abs_mag":0.088,"abs_mag_band":"V","distance_ly":418.68596360585036,"distance_method":"parallax","ra_deg":125.00229000000002,"dec_deg":-71.505377,"epoch_ra_deg":124.974903,"epoch_dec_deg":-71.588912,"epoch_moved_arcsec":1.048,"pm_ra_mas_yr":-17.73,"pm_dec_mas_yr":35.09,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Volans","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-71066","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"08198-7131","age_years":210270940,"companions":[{"measured":2020,"magnitude":7.67,"components":"BC","discoverer_code":"BSO  17","separation_arcsec":37.2,"position_angle_deg":30}],"mass_solar":3.047,"radius_solar":2.891,"spectral_type":"B9/A0IV","uncertainties":{"metallicity_fe_h":[0.06,0.06]},"color_index_bv":-0.099,"luminosity_solar":80.31561699226565,"metallicity_fe_h":0.69,"radial_velocity_km_s":-6,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality D)","surface_gravity_log_g":4.034,"surface_temperature_k":11396,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":-17.73,"proper_motion_dec_mas_yr":35.09,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate","bolometric_luminosity_solar":115.9447},"designations":[{"catalog":"Bayer/Flamsteed","designation":"Kappa2 Vol"},{"catalog":"HD","designation":"HD 71066"},{"catalog":"HIP","designation":"HIP 40834"},{"catalog":"HR","designation":"HR 3302"}],"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."}