{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.818","julian_year":2026.818,"time":"2026-10-26T19:31:27.862Z","years_from_j2000":26.818,"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":"dziban","name":"Dziban","class":"f5iv_v_yellow_white_subgiant","category":"star","object_type":"F5IV-V yellow-white subgiant","mag":4.57,"mag_band":"V","abs_mag":2.777,"abs_mag_band":"V","distance_ly":74.48204888452868,"distance_method":"parallax","ra_deg":265.48467,"dec_deg":72.148843,"epoch_ra_deg":265.366922,"epoch_dec_deg":72.132695,"epoch_moved_arcsec":7.27,"pm_ra_mas_yr":26.6,"pm_dec_mas_yr":-269.77,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Draco","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/dziban","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":"17419+7209","companions":[{"measured":2020,"magnitude":5.59,"components":"AB","discoverer_code":"STF2241","separation_arcsec":30.2,"position_angle_deg":16},{"measured":2004,"magnitude":11.05,"components":"AC","discoverer_code":"STF2241","separation_arcsec":78.1,"position_angle_deg":107},{"measured":2004,"magnitude":12.98,"components":"AD","discoverer_code":"STF2241","separation_arcsec":105.9,"position_angle_deg":66}],"spectral_type":"F5IV-V","color_index_bv":0.434,"luminosity_solar":6.748387308707568,"radial_velocity_km_s":-13.7,"spectral_type_source":"SIMBAD (2001AJ....121.2148G, quality C)","proper_motion_ra_mas_yr":26.6,"proper_motion_dec_mas_yr":-269.77},"designations":[{"catalog":"Bayer/Flamsteed","designation":"31 Psi1 Dra"},{"catalog":"Common name","designation":"Dziban"},{"catalog":"Gliese","designation":"Gl 694.1A"},{"catalog":"HD","designation":"HD 162003"},{"catalog":"HIP","designation":"HIP 86614"},{"catalog":"HR","designation":"HR 6636"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. Dziban [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/dziban","bibtex":"@misc{spacecatalog_dziban,\n  author       = {{SpaceCatalog}},\n  title        = {{Dziban}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/dziban},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/dziban","release":"DR1","doi":null},"references":[{"bibcode":"2001AJ....121.2148G","ads_url":"https://ui.adsabs.harvard.edu/abs/2001AJ....121.2148G/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."}