{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T18:03:09.195Z","years_from_j2000":26.681,"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-87080","name":"HD 87080","class":"g6iii_ba5_5_ch_yellow_giant","category":"star","object_type":"G6III_Ba5.5_CH yellow giant","mag":9.4,"mag_band":"V","abs_mag":3.585,"abs_mag_band":"V","distance_ly":474.7545280300025,"distance_method":"parallax","ra_deg":150.50361,"dec_deg":-33.68514,"epoch_ra_deg":150.796929,"epoch_dec_deg":-33.813862,"epoch_moved_arcsec":2.559,"pm_ra_mas_yr":-65.45,"pm_dec_mas_yr":70.1,"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-87080","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10020-3341","companions":[{"measured":2016,"magnitude":16.6,"components":null,"discoverer_code":"DAM1940","separation_arcsec":14.4,"position_angle_deg":273}],"spectral_type":"G6III_Ba5.5_CH","color_index_bv":0.775,"luminosity_solar":3.206269324505465,"variable_mag_max":9.343,"variable_mag_min":9.463,"radial_velocity_km_s":-2,"spectral_type_source":"SIMBAD (1977MNRAS.181..391C, quality C)","surface_temperature_k":5321,"proper_motion_ra_mas_yr":-65.45,"proper_motion_dec_mas_yr":70.1,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 87080"},{"catalog":"HIP","designation":"HIP 49166"}],"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."}