{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T06:24:26.843Z","years_from_j2000":26.669,"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-60863","name":"HD 60863","class":"b7v_blue_white_main_sequence_star","category":"star","object_type":"B7V blue-white main-sequence star","mag":4.65,"mag_band":"V","abs_mag":0.49,"abs_mag_band":"V","distance_ly":221.5736828891142,"distance_method":"parallax","ra_deg":113.84541,"dec_deg":-28.369323,"epoch_ra_deg":114.114504,"epoch_dec_deg":-28.4281,"epoch_moved_arcsec":1.853,"pm_ra_mas_yr":-66.9,"pm_dec_mas_yr":-18.71,"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-60863","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07354-2822","companions":[{"measured":2009,"magnitude":9.13,"components":"AB","discoverer_code":"HJ 3982","separation_arcsec":36.9,"position_angle_deg":141},{"measured":1999,"magnitude":7.88,"components":"AD","discoverer_code":"SHY 512","separation_arcsec":530.5,"position_angle_deg":209}],"spectral_type":"B7V","color_index_bv":-0.111,"luminosity_solar":55.462571295791044,"radial_velocity_km_s":3,"spectral_type_source":"SIMBAD (1970MmRAS..72..233H, quality C)","surface_temperature_k":13073,"proper_motion_ra_mas_yr":-66.9,"proper_motion_dec_mas_yr":-18.71,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 60863"},{"catalog":"HIP","designation":"HIP 36917"},{"catalog":"HR","designation":"HR 2922"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}