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BD star numbers are still used and allow the correlation of the work with modern projects. The format of a BD number is exemplified by "BD−16 1591", which is the BD number of Sirius . This number signifies that in the catalog, Sirius is the 1591st star listed in the declination zone between −16 and −17 degrees, counting from 0 hours right ...
K2 — K2 (Kepler extended mission) catalog; KELT — Kilodegree Extremely Little Telescope (search for extrasolar planets) Kemble — Father Lucian Kemble (asterisms which could be observed through binoculars, for example: Kemble 1, aka Kemble's Cascade in Camelopardalis) Kepler — Kepler catalog; Kes — Kesteven (supernova remnants).
The Guide Star Catalog is an online catalogue of stars produced for the purpose of accurately positioning and identifying stars satisfactory for use as guide stars by the Hubble Space Telescope program. The first version of the catalogue was produced in the late 1980s by digitizing photographic plates and contained about 20 million stars, out ...
BD – (catalog) Bonner Durchmusterung; BD – (celestial object) Brown dwarf; BEN – (catalog) Jack Bennett catalog, a catalog of deep-sky objects for amateur astronomers; BEL – (celestial object) broad emission line clouds in Active galactic nucleus [1] BF – (astrophysics terminology) Broadening function; BH – (celestial object) Black hole
While the SAO catalog is more or less complete to V=9, with 4,503 stars fainter than V=10, the PPM catalog is fairly complete to V=9.5, with 102,672 stars fainter than V=10 and 22,395 stars fainter than V=11. Released after the original PPM, the PPM supplemental list was intended to render the PPM complete to magnitude V=7.5.
This page was last edited on 17 December 2017, at 19:18 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
An all-points bulletin (APB) is an electronic information broadcast sent from one sender to a group of recipients, to rapidly communicate an important message. [1] The technology used to send this broadcast has varied throughout time, and includes teletype , radio, computerized bulletin board systems (CBBS), and the Internet.
Bruce Welty was born in Minneapolis, Minnesota.In 1972, he moved with his family to Concord, Massachusetts, where he attended Concord-Carlisle High School.In 1979, he received a Bachelor of Arts in mathematics from Colorado College and later attended the graduate program at Boston College's Carroll School of Management.