lunar centric orbit?

we know the parameters of geocentric orbit
but what are the parameters of lunar centric orbit?

where could you site an orbiting moon base so that it was stationary above
the surface?

if you could then I suggest that it may be far easier to make a moonstalk
elevator because of lesser stresses involved and lack of atmosphere to drag
on the stalk

given that the moon keeps one face to the earth; I would assume that the
only "selenestationary" orbit is at the earth it self!


"blart" wrote in message
...
we know the parameters of geocentric orbit
but what are the parameters of lunar centric orbit?

where could you site an orbiting moon base so that it was stationary above
the surface?

if you could then I suggest that it may be far easier to make a moonstalk
elevator because of lesser stresses involved and lack of atmosphere to
drag on the stalk

On Thu, 10 Nov 2005 02:06:06 GMT, "no_one"
wrote:

given that the moon keeps one face to the earth; I would assume that the
only "selenestationary" orbit is at the earth it self!

L1 and L2 also fit the bill.

where could you site an orbiting moon base so that it was stationary above
the surface?

-- Roy L

In article ,
wrote:

On Thu, 10 Nov 2005 02:06:06 GMT, "no_one"
wrote:

given that the moon keeps one face to the earth; I would assume that the
only "selenestationary" orbit is at the earth it self!

L1 and L2 also fit the bill.

As do L4 and L5.

blart,
ME-L1/EM-L2 is about as "lunar centric" of an orbit as it gets.

Although interactive in a good sort of way, the mutual gravity-well
offer a sweet spot of a parallel parking zone for the LSE-CM/ISS that
is just downright nifty and about as easy for keeping an eye upon as it
gets.

Could you or perhaps from others tuning in suggest as to exactly where
that nullification zone is at any given time in the cycle of our moon
having to orbit a somewhat off-center Earth while also having to deal
with the sun and, every 19 month having a strong pull contributed by
Venus just for keeping things interesting.

Brad Guth
~

Kurt Vonnegut would have to agree; WAR is WAR, thus "in war there are
no rules" - In fact, war has been the very reason of having to deal
with the likes of others that haven't been playing by whatever rules,
such as GW Bush.
Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac:
http://guthvenus.tripod.com/gv-town.htm
The Russian/China LSE-CM/ISS (Lunar Space Elevator)
http://guthvenus.tripod.com/lunar-space-elevator.htm
Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm

blart,
The ME-L1/EM-L2 is about as "lunar centric" of an orbit as it gets.

Although fully interactive in a good sort of way, this mutual
gravity-well offers us one heck of an energy efficient 'sweet spot'
worth of a parallel satellite parking zone for the future LSE-CM/ISS,
that's getting just downright nifty and about as easy for keeping an
eye upon as it gets.

Most everything necessary for establishing and maintaining this
station-keeping position can be effectively managed via terrestrial
ground-control. Hell bells folks, this could even be a 4H club amateur
science project, along with the right software and just a dial-up
internet connection should be sufficient for most any PC to manage the
entire station-keeping requirements and of accomplishing all sort of
Earth/moon related science. All that this sort of platform needs to
incorporate is a good Rn breeder reactor, whereas Ra226--Rn222, thus
LRn gets briefly stored and then LRn--Rn--ion thrust seems like a
win-win sort of reliable form of ion thrust for managing this platform
like a slow-motion ping pong ball within this interactive ME-L1/EM-L2
zone.

Could yourself or perhaps from others contributing their expertise
suggest as to exactly where that nullification zone is at any given
time within the cycle of our moon, as having to orbit along with the
somewhat off-centered and rotating Earth influence while also having to
deal with the sun and, of every 19 months having another pull
contributed by Venus just for keeping things a bit interesting. Upon
average at the Earth/moon distance of 384,400 km it's supposedly
located at roughly 60,000 km off the lunar deck, or 16% of the distance
away from the moon, although that may or may not be the case.

BTW; That's only a five body equation if we're having to include
anything as for the satellite platform mass. It becomes a 6 body
equation if having to include the lunar anchored tethers and, it gets
into a 7+ body equation if there's a tether dipole element involved. Of
course, there could also be a few interactive variables as to various
automated/robotic items associated along with the LSE-CM/ISS, in which
case a CRAY super-computer might have to get involved.

Brad Guth
~

Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac:
http://guthvenus.tripod.com/gv-town.htm
The Russian/China LSE-CM/ISS (Lunar Space Elevator)
http://guthvenus.tripod.com/lunar-space-elevator.htm
Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm

Lagrange points operate between Earth and Sun as well... which can be
put to good use.


http://www.cds.caltech.edu/~shane/pa..._ross_2001.pdf

More popularized versions of the same information;

http://map.gsfc.nasa.gov/m_mm/ob_techorbit1.html
http://plus.maths.org/issue36/features/dartnell/
http://map.gsfc.nasa.gov/m_mm/ob_techorbit.html

oke dokey

L1 is 61500km above surface of moon
so what is projection of L1 on Moon - where is it, crudely?
disregarding nutation and all?
Tranquillitatus?
Perhaps a peak to anchor the moonstalk to?
What are the dynamics of a moonstalk to L1 as opposed to an earthstalk?

the L5 song (chorus)
Home, home on Lagrange,
Where the space debris always collects,
We possess, so it seems, two of Man's greatest dreams:
Solar power and zero-gee sex.

cheers

wrote in message
...
On Thu, 10 Nov 2005 02:06:06 GMT, "no_one"
wrote:

given that the moon keeps one face to the earth; I would assume that the
only "selenestationary" orbit is at the earth it self!

L1 and L2 also fit the bill.

where could you site an orbiting moon base so that it was stationary
above
the surface?

-- Roy L

William Mook; Lagrange points operate between Earth and Sun
as well... which can be put to good use.
That's very true, except that they're not worth LSE or any other SE
squat.

Since we still haven't a viable fly-by-rocket lander, plus there are so
many other perfectly valid reasons, whereas such there's no viable
alternative but for establishing and using a lunar space elevator.

Thanks for all these old but terrific links. May I further ask;
http://www.cds.caltech.edu/~shane/pa..._ross_2001.pdf
http://map.gsfc.nasa.gov/m_mm/ob_techorbit1.html
http://plus.maths.org/issue36/features/dartnell/
http://map.gsfc.nasa.gov/m_mm/ob_techorbit.html
Why are you avoiding any personal contributions as to the LL-1/ME-L1
zone that's offering us such an absolute sweet-spot although
interactive zone for the LSE-CM/ISS to coexist within?

You seem to be so all-knowing, in that I can't imagine a wizard like
yourself not knowing a thing or two as to various ways of establishing
and utilizing the LL-1/ME-L1 and of the LSE-CM/ISS.

Brad Guth

blart; we know the parameters of geocentric orbit
but what are the parameters of lunar centric orbit?
Apparently, we don't seem to know squat about the aspects of any "lunar
centric orbit".
Even those links provided by "William Mook" are remaining as illusive
as to sharing the truth and thereby failing to provide the exact
distances involved are why it's still nearly anyone's SWAG. That is
unless you've got one of those Einstein brains and/or a fully software
configured parallel supercomputer in order to work with all of the
variables.

As I'd contributed before; The LL1 or ME-L1/EM-L2 zone is offering
about as "lunar centric" of any artificial satellite orbit as it gets,
as an energy efficient halo orbiting zone for an untethered satellite,
to that of an interactive station-keeping consideration for a fully
tethered LSE alternative.

Although being a fully interactive zone in a good sort of way, this
mutual LL1 gravity-well offers us one heck of an energy efficient
'sweet-spot' worth of a parallel satellite parking zone for
accommodating the future Chinese LSE-CM/ISS, that's getting such things
just downright nifty and about as easy for keeping an eye upon as it
gets.

Most everything that's necessary for establishing and maintaining this
station-keeping position can be effectively managed via terrestrial
ground-control. Hell bells folks, this could even be flown as 4H club
or even Grade School amateur science project, along with the right
software and just a dial-up internet connection should be sufficient
for most any PC to manage the entire station-keeping requirements and
of accomplishing all sort of Earth/moon related science.

All that this sort of platform needs to incorporate is a good
Radon(Rn222) breeder reactor, whereas Radiun(Ra226)--Rn222, thus LRn
gets briefly stored and then LRn--Rn--ion thrust seems like a win-win
sort of reliable form of ion thrust for managing this platform like a
slow-motion ping pong ball within this interactive ME-L1/EM-L2 zone.

Could yourself or perhaps from other wizards contributing their
expertise suggest as to exactly where that nullification zone is at any
given time within the month by month cycle of our moon, as having to
orbit along with the somewhat off-centered and rotating Earth gravity
ant tidal influences while also having to deal with the sun and, of
every 19 months having another time extended pull contributed by Venus
just for keeping things a bit interesting. Upon average at the
Earth/moon distance of 384,400 km is supposedly having this LL1 located
at roughly 60,000 km off the lunar deck, or 16% of the Earth/moon
distance away from the lunar deck, although without further input for
the wizards of this usenet, as such that raw estimate may or may not be
the case.

BTW; That's only involving a five body equation if we're having to
include anything as for the satellite platform mass which could range
anywhere from a few initial tonnes to a rather considerable worth of
megatonnes if not a gigatonne to work with. It only becomes a 6 body
equation if having to include the lunar anchored tethers and, it gets
into an interesting 7+ body equation if there's an interactive tether
dipole element involved that's reaching to within 25,000 km of mother
Earth. Of course, there could also be a few other interactive variables
as to various automated/robotic items associated along with the
LSE-CM/ISS, in which case a full blown CRAY supercomputer might have to
get involved.

Brad Guth
~

Life upon Venus, a township w/Bridge & ET/UFO Park-n-Ride Tarmac:
http://guthvenus.tripod.com/gv-town.htm
The Russian/China LSE-CM/ISS (Lunar Space Elevator)
http://guthvenus.tripod.com/lunar-space-elevator.htm
Venus ETs, plus the updated sub-topics; Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm