Date: Tue, 19 Sep 89 23:56:05 EST Reply-To: Apple II List Sender: Apple II List From: "H. Grant Delaney" Subject: Documentation for Solar System/Planetary Probe Simulation Date: 11 Sep 89 8:46 -0600 From: reeder@reed.uucp To: info-apple2-l@relay.CDNnet.CA Reply-To: reeder@reed.uucp Message-ID: <13284@reed.UUCP> Subject: Documentation for Solar System/Planetary Probe simulation >Path: ubc-cs!uw-beaver!cornell!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uun et!zephyr.ens.tek.com!tektronix!reed!reeder >Newsgroups: comp.binaries.apple2 >Organization: Reed College, Portland OR >Lines: 44 Numbers: When you must tell the computer which body (sun, planet, you) you want, 0 is always the sun, the planets are assigned numbers in the order you chose th em, and you are the last number. If you took Earth and Jupiter, in that order, 1 is the Earth, 2 is Jupiter, and 3 is you. Commands: cale: the larger the scale, the smaller the area you see ime: number of days per calculation The more days per calculation, the faster things seem to move. Orbits get skewed when you calculate too many days at a ti me. urn fuel: A .1 burn will increase your velocity .1. Orbital burns are along y our flight path,transverse is perpendicular. Positive transverse burns push you in when going clockwise and out going counterclockwise. uit this setup

ath trace: Toggle on or off nquire about location an velocity of a planet or yourself ocus: changes what body is shown motionless in the middle of the screen. elative velocity - you and another body lock eep a position so you can return to it o back to an earlier position cceleration(total): how much fuel you've used :list of commands Scale: 1 unit of distance = 10,000,000km 1 unit of time = 1 day 1 unit of mass = 1 solar mass 1 unit of velocity = 9.86E6 km/day = 114.1 km/sec (sorry!) The moon will not orbit the Earth unless the time increment is .05 or less.-- Doug Reeder USENET: ...!tektronix!reed!reeder Institute of Knowledge, Jinx BITNET: reeder@reed.BITNET "A blaster can point two ways." from ARPA: tektronix!reed!reeder@berkeley.EDU -Salvor Hardin Box 722 Reed College,Portland,OR 97202