Henderson
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Henderson
| Lat: 4.8°N, Long: 152.1°E, Diam: 47 km, Depth: km, Rükl: (farside) |
left: LO-I-116 M . right: LROC
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Thomas James Henderson (December 28, 1798 - November 23, 1844) was a Scottish astronomer noted for being the first person to measure the distance to Alpha Centauri, the major component of the nearest stellar system to Earth, and for being the first Astronomer Royal for Scotland. The 1830s version of the "space race" was to be the first person to measure the distance to a star using parallax, a task which is easier the closer the star. Henderson began analyzing his measurements and eventually came to the conclusion that Alpha Centauri was just slightly less that one parsec away, 3.25 light years. This figure is reasonably accurate, being 33.7% too small.
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