| Issue |
J. Space Weather Space Clim.
Volume 7, 2017
|
|
|---|---|---|
| Article Number | A15 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/swsc/2017012 | |
| Published online | 09 June 2017 | |
Research Article
Sunspots sketches during the solar eclipses of 9th January and 29th December of 1777 in Mexico
1
Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (IPE-CSIC), Zaragoza
50059, Spain
2
Departamento de Física, Universidad de Extremadura, Badajoz
06006, Spain
3
Instituto Universitario de Investigación del Agua, Cambio Climático y Sostenibilidad (IACYS), Universidad de Extremadura,
Badajoz
06006, Spain
* Corresponding author: jvaquero@unex.es
Received:
31
March
2017
Accepted:
9
May
2017
Two sunspot observations recorded by the Mexican Felipe de Zúñiga y Ontiveros have been revealed from a manuscript. One sunspot group was recorded on 9th January 1777 and four sunspot groups on 29th December 1777. Both records were taken during the observation of solar eclipses from Mexico City and their description also included sketches of the solar disk with sunspots. The sunspot group corresponding to 9th January was also observed by Erasmus Lievog. The observation on 29th December 1777 is the only record corresponding to this date.
Key words: Historical records / Sunspot / Solar activity / Sun / Solar cycle
© F. Domínguez-Castro et al., Published by EDP Sciences 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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