Path: utzoo!attcan!uunet!mcsun!unido!rwthinf!dieter From: dieter@rwthinf.UUCP (Dieter Kreuer) Newsgroups: sci.space.shuttle Subject: Re: Why STS-35 is being launched at night. Summary: question about orbits Message-ID: <2939@rwthinf.UUCP> Date: 29 May 90 16:53:16 GMT References: <6282.266023d3@jetson.uh.edu> <1990May28.153022.20010@utzoo.uucp> Organization: RBI - RWTH Aachen Lines: 25 In article <1990May28.153022.20010@utzoo.uucp>, henry@utzoo.uucp (Henry Spencer) writes: > This fits with the night launch. From a northern launch site, a night > launch into low-inclination orbit gives you an orbit with its northern > end on the night side of the Earth and its southern end on the day side. > -- For how long is this orientation of the orbit stable (it is certainly perturbed by Sun, Moon, atmospheric deceleration, revolution of Earth around Sun etc.)? I don't doubt that it will be stable for the whole STS-35 mission, I'm just curious about how big these impacts might be. |============================================================================== | . . . . _____ . . . * .| Dieter Kreuer | | . * . . / O \ . + . . | Lehrstuhl Informatik IV | | . . +. * |\ O O /| . * . | RWTH Aachen | | ____________ | \___//| . ____________ | Ahornstr. 55 | | /_/_/_/_/_/_/__| |___|/|___/_/_/_/_/_/_/ . | D-5100 Aachen | | /_/_/_/_/_/_/ . | |___|/| /_/_/_/_/_/_/ | F.R.Germany | | . . . \ |___|//. . +. . | | | .* . \|___|/ . * : . | Phone: +49-241-804523 | | . * . /. \ .* =============| Fax: +49-241-806295 | | . +. . . / . \. . / E-Mail: dieter@informatik.rwth-aachen.de | | . . / .+ \. / dieter@rwthinf.uucp | |==============================================================================