{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T14:10:59.256Z","years_from_j2000":26.683,"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-96600-b","name":"HD 96600 B","class":"g_yellow_star","category":"star","object_type":"G yellow star","mag":10.92,"mag_band":"V","abs_mag":5.338,"abs_mag_band":"V","distance_ly":426.3483553875498,"distance_method":"parallax","ra_deg":166.72527,"dec_deg":-46.171071,"epoch_ra_deg":167.029316,"epoch_dec_deg":-46.316615,"epoch_moved_arcsec":6.149,"pm_ra_mas_yr":-224.28,"pm_dec_mas_yr":-52.89,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Centaurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-96600-b","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"11069-4610","companions":[{"measured":2015,"magnitude":13.09,"components":"AB","discoverer_code":"HDS1584","separation_arcsec":11.5,"position_angle_deg":91},{"measured":2016,"magnitude":17,"components":"AC","discoverer_code":"TSN  49","separation_arcsec":102.5,"position_angle_deg":289}],"radius_solar":0.779,"spectral_type":"G","color_index_bv":0.59,"luminosity_solar":0.6379696226625788,"variable_mag_max":10.845,"variable_mag_min":10.995,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2014yCat....1.2023S, quality E)","surface_gravity_log_g":4.523,"surface_temperature_k":5614,"proper_motion_ra_mas_yr":-224.28,"proper_motion_dec_mas_yr":-52.89,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.5446},"designations":[{"catalog":"HD","designation":"HD 96600"},{"catalog":"HIP","designation":"HIP 54335"}],"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."}