banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The Hetu'u Global Network: Measuring the Distance to the Sun Using the June 5th/6th Transit of Venus
Rent this article for
Access full text Article
1. Backhaus, U. and Breil, S. 2012, “ Methods of contact times: Mathematical details,” http://www.venus2012.de/venusprojects/contacttimes/details/detailstimes.php.
2. Forbes, G. 1874, The Transit of Venus, London, Macmillan and Co.
3. Pasachoff, J. M. , Schneider, G. , and Golub, L. 2005, “ The black-drop effect explained,” in Transits of Venus: New Views of the Solar System and Galaxy, IAU Colloquium No. 196, ed. D. W. Kurtz and G. E. Bromage, U.K. 242.
4. Pasachoff, J. M. 2012, “ Transit of Venus: Last Chance From Earth until 2117,” Physics World, 25(5 ), 36.
5. Schneider, G. , Pasachoff, J. M. , and Golub, L. 2004, “ TRACE Observations of the 15 November 1999 Transit of Mercury and the Black Drop Effect: Considerations for the 2004 Transit of Venus,” Icarus 168, 249.
6. Short, J. 1761, “ The observations of the internal contact of Venus with the Sun's limb, in the late transit, made in different places of Europe, compared with the time of the same contact observed at the Cape of Good Hope, and the parallax of the Sun from thence determined,” Philosophical Transactions of the Royal Society, 52, 611.
7. Teets, D. 2003, “ Transits of Venus and the Astronomical Unit,” Mathematics Magazine, 76(5), 335.
8. Van Roode, S. and Mignard, F. 2012, “ Transit of Venus: Local transit times,” http://transitofvenus.nl/wp/where-when/local-transit-times/.

Data & Media loading...


In the spirit of historic astronomical endeavors, we invited school groups across the globe to collaborate in a solar distance measurement using the rare June 5/6th transit of Venus. In total, we recruited 19 school groups spread over 6 continents and 10 countries to participate in our Hetu'u Global Network. Applying the methods of French astronomer Joseph-Nicolas Delisle, we used individual second and third Venus-Sun contact times to calculate the distance to the Sun. Ten of the sites in our network had amiable weather; 8 of which measured second contact and 5 of which measured third contact leading to consistent solar distance measurements of 152 ± 30 million km and 163 ± 30 million km, respectively. The distance to the Sun at the time of the transit was 152.25 million km; therefore, our measurements are also consistent within 1σ of the known value. The goal of our international school group network was to inspire the next generation of scientists using the excitement and accessibility of a rare astronomical event. In the process, we connected hundreds of participating students representing a diverse, multicultural group with differing political, economic, and racial backgrounds.


Full text loading...

This is a required field
Please enter a valid email address
This feature is disabled while Scitation upgrades its access control system.
This feature is disabled while Scitation upgrades its access control system.
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The Hetu'u Global Network: Measuring the Distance to the Sun Using the June 5th/6th Transit of Venus