{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T20:34:33.087Z","years_from_j2000":26.67,"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-89995","name":"HD 89995","class":"f6v_yellow_white_main_sequence_star","category":"star","object_type":"F6V yellow-white main-sequence star","mag":6.54,"mag_band":"V","abs_mag":2.836,"abs_mag_band":"V","distance_ly":179.60159710987963,"distance_method":"parallax","ra_deg":155.81088,"dec_deg":5.694263,"epoch_ra_deg":156.159322,"epoch_dec_deg":5.558222,"epoch_moved_arcsec":6.577,"pm_ra_mas_yr":-239.36,"pm_dec_mas_yr":-59.31,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Sextans","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-89995","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10232+0542","companions":[{"measured":2019,"magnitude":12,"components":"Aa,Ab","discoverer_code":"TOK 200","separation_arcsec":1,"position_angle_deg":336},{"measured":2013,"magnitude":10.45,"components":"AB","discoverer_code":"SHJ 115","separation_arcsec":63.7,"position_angle_deg":13}],"spectral_type":"F6V","color_index_bv":0.448,"luminosity_solar":6.39145889185814,"metallicity_fe_h":-0.4,"radial_velocity_km_s":30,"spectral_type_source":"SIMBAD (2007MNRAS.374..664C, quality D)","surface_gravity_log_g":4.04,"surface_temperature_k":6356,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":-239.36,"proper_motion_dec_mas_yr":-59.31,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 89995"},{"catalog":"HIP","designation":"HIP 50870"},{"catalog":"HR","designation":"HR 4079"}],"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."}