{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.833","julian_year":2026.833,"time":"2026-11-01T02:09:24.132Z","years_from_j2000":26.833,"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-64606","name":"HD 64606","class":"k0v_orange_dwarf","category":"star","object_type":"K0V orange dwarf","mag":7.43,"mag_band":"V","abs_mag":5.915,"abs_mag_band":"V","distance_ly":65.51959778125028,"distance_method":"parallax","ra_deg":118.64241,"dec_deg":-1.412258,"epoch_ra_deg":118.983052,"epoch_dec_deg":-1.48329,"epoch_moved_arcsec":6.953,"pm_ra_mas_yr":-251.57,"pm_dec_mas_yr":-62.07,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Monoceros","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-64606","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":"07546-0125","companions":[{"measured":2025,"magnitude":11.4,"components":"Aa,Ab","discoverer_code":"YSC 198","separation_arcsec":0.6,"position_angle_deg":335},{"measured":1991,"magnitude":11.62,"components":"AB","discoverer_code":"HDS1125","separation_arcsec":4.9,"position_angle_deg":99}],"spectral_type":"K0V","uncertainties":{"metallicity_fe_h":[0.083,0.083]},"color_index_bv":0.739,"luminosity_solar":0.3749730022454834,"metallicity_fe_h":-0.91,"radial_velocity_km_s":102,"spectral_type_source":"SIMBAD (1999MSS...C05....0H, quality C)","surface_gravity_log_g":4.4,"surface_temperature_k":5200,"metallicity_fe_h_source":"Median of 18 spectroscopic determinations in 25 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-251.57,"proper_motion_dec_mas_yr":-62.07,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Gliese","designation":"Gl 292.2"},{"catalog":"HD","designation":"HD 64606"},{"catalog":"HIP","designation":"HIP 38625"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. HD 64606 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-64606","bibtex":"@misc{spacecatalog_hd-64606,\n  author       = {{SpaceCatalog}},\n  title        = {{HD 64606}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-64606},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-64606","release":"DR1","doi":null},"references":[{"bibcode":"1999MSS...C05....0H","ads_url":"https://ui.adsabs.harvard.edu/abs/1999MSS...C05....0H/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."}