{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T15:47:49.086Z","years_from_j2000":26.675,"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-63568","name":"HD 63568","class":"f5iv_yellow_white_subgiant","category":"star","object_type":"F5IV yellow-white subgiant","mag":8.96,"mag_band":"V","abs_mag":2.862,"abs_mag_band":"V","distance_ly":540.8895828960044,"distance_method":"parallax","ra_deg":114.711015,"dec_deg":-79.42147,"epoch_ra_deg":114.319606,"epoch_dec_deg":-79.48158,"epoch_moved_arcsec":0.556,"pm_ra_mas_yr":3.25,"pm_dec_mas_yr":-20.6,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Chamaeleon","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-63568","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"spectral_type":"F5IV","color_index_bv":0.535,"luminosity_solar":6.240221421389766,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality C)","proper_motion_ra_mas_yr":3.25,"proper_motion_dec_mas_yr":-20.6},"designations":[{"catalog":"HD","designation":"HD 63568"},{"catalog":"HIP","designation":"HIP 37231"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","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."}