{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.665","julian_year":2026.665,"time":"2026-08-31T21:27:32.433Z","years_from_j2000":26.665,"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-37055","name":"HD 37055","class":"b3iii_blue_white_giant","category":"star","object_type":"B3III blue-white giant","mag":6.4,"mag_band":"V","abs_mag":-1.989,"abs_mag_band":"V","distance_ly":1553.125685831249,"distance_method":"parallax","ra_deg":83.89960500000001,"dec_deg":-3.25284,"epoch_ra_deg":84.235172,"epoch_dec_deg":-3.235091,"epoch_moved_arcsec":0.035,"pm_ra_mas_yr":0.85,"pm_dec_mas_yr":-1,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Orion","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-37055","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05356-0315","companions":[{"measured":1991,"magnitude":10.52,"components":null,"discoverer_code":"RST4281","separation_arcsec":1,"position_angle_deg":352}],"spectral_type":"B3III","color_index_bv":-0.122,"luminosity_solar":544.0013782467271,"radial_velocity_km_s":24,"spectral_type_source":"SIMBAD (1980A&AS...40..207C, quality C)","proper_motion_ra_mas_yr":0.85,"proper_motion_dec_mas_yr":-1},"designations":[{"catalog":"HD","designation":"HD 37055"},{"catalog":"HIP","designation":"HIP 26263"},{"catalog":"HR","designation":"HR 1900"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}