Astrum
Approximately 250 km wide Nova around the summit of Ts'an Nu Mons, northwest of the Themis Regio highlands.
27.2 ° South, 272.9 ° East
27.2 ° South, 272.9 ° East
Astrum ( Latin “star”, plural astra ) or nova (Latin “new”, plural novae ) is a type of radially symmetrical morphological structures on Venus in astrogeology according to the planetary nomenclature . The Astra typically show a dense network of fractures emanating from a center. It is still unclear whether all Astra were created in the same way and how they were created. The astra are not randomly distributed on the surface of Venus, but show clusters.
As part of an official designation, Astrum and Astra are recognized by the IAU .
literature
- AT Basilevsky, Jouko Raitala: Morphology of selected novae (astra) from the analysis of Magellan images at Venus. In: Planetary and Space Science Vol. 50, Issue 1 (Jan. 2002), pp. 21-39
- H. Sigurdsson et al. (Ed.): Encyclopedia of Volcanoes. Academic Press, New York, p. 727
Individual evidence
- ↑ Venus quadrangle V-53 (with Ts'an Nu Mons) in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS (PDF)
- ↑ Nova . springerreference.com
- ↑ M. Aittola, J. Raitala: Classifications of Venusian Novae (astra). In: European Planetary Science Congress 2006. Berlin, Germany, September 18-22, 2006. p. 313
- ↑ Descriptor Terms in the IAU's Gazetteer of Planetary Nomenclature