Bola langit: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 10:
* [[Satelit]]
* [[Orbit]]
==Referensi==
*{{cite book
| first = Nathaniel
| last = Bowditch
| authorlink = Nathaniel Bowditch
| title = The American Practical Navigator
| publisher = [[National Imagery and Mapping Agency]]
| url = http://www.irbs.com/bowditch/
| location= Bethesda, MD
| year = 2002
| isbn = 0-939837-54-4 }}
*{{cite book |author=MacEwen, William A.; William Hayler; Turpin, Edward A. |title=Merchant Marine officers' handbook: based on the original edition by Edward A. Turpin and William A. MacEwen |publisher=Cornell Maritime Press |location=Cambridge, Md |year=1989 |pages=46–51 |edition= 5th|isbn=0-87033-379-8 |oclc= |doi= |accessdate=}}
{{commons category|Celestial spheres}}
* [http://stars.astro.illinois.edu/celsph.html MEASURING THE SKY A Quick Guide to the Celestial Sphere] Jim Kaler, University of Illinois
* [http://en.wikibooks.org/wiki/General_Astronomy/The_Celestial_Sphere General Astronomy/The Celestial Sphere] Wikibooks
* [http://astro.unl.edu/naap/motion2/animations/ce_hc.html Rotating Sky Explorer] University of Nebraska-Lincoln
* [http://skyandtelescope.com/observing/skychart/# Interactive Sky Chart] SkyandTelescope.com
* [http://astroclub.tau.ac.il/skymaps/monthly/ Monthly skymaps] for every location on Earth
{{astronomi-stub}}
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