{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-06T00:08:21.625Z","years_from_j2000":26.679,"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-82238","name":"HD 82238","class":"f3v_yellow_white_main_sequence_star","category":"star","object_type":"F3V yellow-white main-sequence star","mag":9.57,"mag_band":"V","abs_mag":3.052,"abs_mag_band":"V","distance_ly":656.2501152252834,"distance_method":"parallax","ra_deg":142.46517,"dec_deg":-36.483463,"epoch_ra_deg":142.740617,"epoch_dec_deg":-36.600877,"epoch_moved_arcsec":0.215,"pm_ra_mas_yr":-8.07,"pm_dec_mas_yr":0.28,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Antlia","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-82238","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"09299-3629","companions":[{"measured":2025,"magnitude":11,"components":"BC","discoverer_code":"TOK 440","separation_arcsec":0.1,"position_angle_deg":94},{"measured":2025,"magnitude":12.52,"components":"AB","discoverer_code":"HDS1364","separation_arcsec":0.8,"position_angle_deg":41}],"spectral_type":"F3V","color_index_bv":0.426,"luminosity_solar":5.238416190277907,"variable_mag_max":9.525,"variable_mag_min":9.625,"radial_velocity_km_s":26.2,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality C)","proper_motion_ra_mas_yr":-8.07,"proper_motion_dec_mas_yr":0.28},"designations":[{"catalog":"HD","designation":"HD 82238"},{"catalog":"HIP","designation":"HIP 46572"}],"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."}