Discoverer designations Double stars are also designated by an abbreviation giving the discoverer together with an index number.pp. 307–308, Observing and Measuring Double Stars, Bob Argyle, ed., London: Springer, 2004, . α Centauri, for example, was found to be double by Father Richaud in 1689, and so is designated RHD 1.Entry 14396-6050, discoverer code RHD 1AB,The Washington Double Star Catalog , United States Naval Observatory. Accessed on line August 20, 2008. These discoverer codes can be found in the Washington Double Star Catalog.References and discoverer codes, The Washington Double Star Catalog , United States Naval Observatory. Accessed on line August 20, 2008.
Discoverer designations Double stars are also designated by an abbreviation giving the discoverer together wit,h an index number.pp. 307–308, Observing and Measuring Double Stars, Bob Argyle, ed., London: Springer, 2004, . α Centauri, for example, was found to be double by Father Richaud i.n 1689, and so is designated RHD 1.Entry 14396-6050, discoverer code RHD 1AB,The Washington Double Star Catalog , United States Naval Observatory. Accessed on line August 20, 20?08. These discoverer codes can be found in the Washington Double Star Catalog.References! and discoverer codes, The Washington Double Star Catalog , United States Naval Observatory. Accessed on line August 20, 2008.