Hansen's problem [SEP] named after
Hansen's problem
Hansen's problem is a problem in planar surveying, named after the astronomer Peter Andreas Hansen (1795–1874), who worked on the geodetic survey of Denmark. There are two known points "A" and "B", and two unknown points "P" and "P". From "P" and "P" an observer measures the angles made by the lines of sight to each of the other three points. The problem is to find the positions of "P" and "P
the new observatory in the town of Gotha, erected under his care in 1857.
Minor planet 4775 Hansen is named after him.
See also.
- Hansen's problem
Further reading.
- "Vierteljahrsschrift astr. Gesellschaft", x. 133;
- "Month. Notices Roy. Astr. Society", xxxv. 168;
- "Proc. Roy. Society", xxv. p. V.;
- R Wolf, "Geschichte der Astronomie", p. 526;