{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.834","julian_year":2026.834,"time":"2026-11-01T14:53:00.075Z","years_from_j2000":26.834,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued position is carried along the great circle the object's own published motion puts it on, at a constant velocity, from the epoch that position was measured at, 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. The motion runs from position_epoch_jyear where the upstream publishes one — a timed pulsar's position belongs to the year it was timed — and from J2000 where it does not. 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-60584","name":"HD 60584","class":"f5v_f6v_yellow_white_main_sequence_star","category":"star","object_type":"F5V+F6V yellow-white main-sequence star","mag":5.06,"mag_band":"V","abs_mag":2.556,"abs_mag_band":"V","distance_ly":103.34493137419418,"distance_method":"parallax","ra_deg":113.577585,"dec_deg":-23.473661,"epoch_ra_deg":113.862555,"epoch_dec_deg":-23.532169,"epoch_moved_arcsec":2.38,"pm_ra_mas_yr":-88.67,"pm_dec_mas_yr":0.97,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Puppis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-60584","source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0","attribution":"HYG Database v4.1, Astronexus (github.com/astronexus/HYG-Database). Fields derived from it stay under CC BY-SA 4.0.","commercial_use":"allowed"},"radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07343-2328","age_years":2512738500,"companions":[{"measured":2018,"magnitude":17.5,"components":"Aa,Ab","discoverer_code":"BNV   7","separation_arcsec":0.5,"position_angle_deg":53},{"measured":2018,"magnitude":15.1,"components":"AC","discoverer_code":"BNV   7","separation_arcsec":4.5,"position_angle_deg":333},{"measured":2016,"magnitude":5.85,"components":"AB","discoverer_code":"H N  19","separation_arcsec":9.9,"position_angle_deg":118}],"mass_solar":1.295,"radius_solar":1.508,"spectral_type":"F5V+F6V","color_index_bv":0.468,"luminosity_solar":8.27179951864134,"radial_velocity_km_s":-5,"spectral_type_source":"SIMBAD (2008ApJS..176..216A, quality C)","surface_gravity_log_g":4.091,"surface_temperature_k":6475,"proper_motion_ra_mas_yr":-88.67,"proper_motion_dec_mas_yr":0.97,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":3.599},"designations":[{"catalog":"HD","designation":"HD 60584"},{"catalog":"HIP","designation":"HIP 36817"},{"catalog":"HR","designation":"HR 2909"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. HD 60584 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-60584","bibtex":"@misc{spacecatalog_hd-60584,\n  author       = {{SpaceCatalog}},\n  title        = {{HD 60584}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-60584},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-60584","release":"DR1","doi":null},"references":[{"bibcode":"2008ApJS..176..216A","ads_url":"https://ui.adsabs.harvard.edu/abs/2008ApJS..176..216A/abstract","quantity":"properties.spectral_type_source"}],"attribution":"Data from SpaceCatalog.org. Each record names its upstream in `source`, with that producer's terms in `source.license`, the acknowledgement it asks for in `source.attribution`, and whether its terms allow commercial use in `source.commercial_use`; those terms govern the record, and citing SpaceCatalog does not discharge them."}