{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.667","julian_year":2026.667,"time":"2026-09-01T14:30:46.879Z","years_from_j2000":26.667,"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":"vindemiatrix","name":"Vindemiatrix","class":"g8iii_iiib_yellow_giant","category":"star","object_type":"G8III-IIIb yellow giant","mag":2.85,"mag_band":"V","abs_mag":0.218,"abs_mag_band":"V","distance_ly":109.59571835313557,"distance_method":"parallax","ra_deg":195.54416999999998,"dec_deg":10.95915,"epoch_ra_deg":195.878725,"epoch_dec_deg":10.814792,"epoch_moved_arcsec":7.354,"pm_ra_mas_yr":-275.05,"pm_dec_mas_yr":19.96,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Virgo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/vindemiatrix","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"13022+1058","companions":[{"measured":2015,"magnitude":11.9,"components":null,"discoverer_code":"BUP 147","separation_arcsec":273.8,"position_angle_deg":117}],"wikidata_id":"Q14198","also_known_as":["The Second Eastern General","ε Vir","ε Virginis"],"spectral_type":"G8III-IIIb","uncertainties":{"metallicity_fe_h":[0.129,0.129]},"color_index_bv":0.934,"luminosity_solar":71.25248247522671,"metallicity_fe_h":0.09,"wikipedia_article":"Epsilon Virginis","radial_velocity_km_s":-14,"spectral_type_source":"SIMBAD (1989ApJS...71..245K, quality B)","surface_gravity_log_g":2.75,"surface_temperature_k":4990,"metallicity_fe_h_source":"Median of 28 spectroscopic determinations in 32 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-275.05,"proper_motion_dec_mas_yr":19.96,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"47 Epsilon Vir"},{"catalog":"Common name","designation":"Vindemiatrix"},{"catalog":"HD","designation":"HD 113226"},{"catalog":"HIP","designation":"HIP 63608"},{"catalog":"HR","designation":"HR 4932"},{"catalog":"IRAS","designation":"IRAS 12596+1113"}],"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."}