{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-02T23:37:21.823Z","years_from_j2000":26.671,"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-53367","name":"HD 53367","class":"b0iv_ve_blue_white_subgiant","category":"star","object_type":"B0IV/Ve blue-white subgiant","mag":6.97,"mag_band":"V","abs_mag":-0.064,"abs_mag_band":"V","distance_ly":832.0314426829668,"distance_method":"parallax","ra_deg":106.106385,"dec_deg":-10.454372,"epoch_ra_deg":106.423749,"epoch_dec_deg":-10.494009,"epoch_moved_arcsec":0.096,"pm_ra_mas_yr":-2.21,"pm_dec_mas_yr":2.86,"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-53367","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07044-1027","companions":[{"measured":2021,"magnitude":8.45,"components":"AB","discoverer_code":"RST3489","separation_arcsec":0.7,"position_angle_deg":298}],"spectral_type":"B0IV/Ve","color_index_bv":0.357,"luminosity_solar":92.38468875379452,"variable_mag_max":6.937,"variable_mag_min":7.177,"radial_velocity_km_s":21,"spectral_type_source":"SIMBAD (2001MNRAS.325.1441T, quality C)","proper_motion_ra_mas_yr":-2.21,"proper_motion_dec_mas_yr":2.86},"designations":[{"catalog":"HD","designation":"HD 53367"},{"catalog":"HIP","designation":"HIP 34116"}],"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."}