@misc{ariss,
	title = {{ARISS} {TLE}},
	shorttitle = {{ARISS}},
	url = {https://live.ariss.org/tle/},
	abstract = {This "Two-Line Element" file is published by US Joint Space Operations Center, containing the numerical coefficients of the ISS orbit.},
	journal = {Amateur Radio on the International Space Station},
	note = {publisher: ARISS},
}

@book{vallado,
	address = {Dordrecht},
	title = {Fundamentals of {Astrodynamics} and {Applications}, 2nd. ed.},
	isbn = {0-07-066829-9},
	publisher = {Microcosm, Inc},
	author = {Vallado, David A.},
	editor = {Larson, Wiley},
	collaborator = {McClain, Wayne},
	year = {1997},
}