Standard azimuth reporting is relative to True North.
On Sat, 2014-07-26 at 10:58 -0400, Lizeth Norman wrote:
Hi all!
Stupid question but one that has been bothering me. What reference does
satpc32 and Orbitron use to generate the azimuth?
Is the resulting heading true or magnetic?
It shouldn't disrupt systems. The specification for the international
designator allows for one to three (3) suffix characters (i.e., A through ZZZ).
73, Ken N2WWD
Sent from my iPad
On Nov 13, 2013, at 5:44 AM, Graham Shirville g.shirvi...@btinternet.com
wrote:
Hi All,
At least one
the
satellite would look like the actual satellite. Even better, I could store
collada models for them and load them in place of the icon. Oh la la, that's
an idea.
Joseph Armbruster
On Mar 26, 2013, at 7:58 AM, Joe Fitzgerald wrote:
On 3/25/2013 6:42 PM, Ken Ernandes wrote:
2. If you decide
My humble suggestion:
1. Implement option 1 for the satellite footprint.
2. If you decide to give the users the ability to input their location, them
the option to provide either a single minimum elevation angle or a local map --
i.e., 360 individual minimum elevations as a function of
I agree -- many of us enjoy getting this news and appreciate the effort
involved in collecting this information.
73, Ken N2WWD
Sent from my iPad
On Mar 11, 2013, at 9:20 AM, JoAnne Maenpaa k9...@comcast.net wrote:
Trevor, thanks for all your work on finding the news.
It seems Trevor was
I disagree with the principle of prodding apathetic people to vote. If
somebody isn't willing to do the research, fill out a card, and mail it back,
then why should we go out of our way to get a vote they themselves apparently
don't care about. I'm more interested in the opinions of those who
I really like GoSatWatch.
73, Ken N2WWD
Sent from my iPad
On Jun 17, 2012, at 3:07 AM, Jim Heck j...@milnet.uk.net wrote:
Hi All,
As a new owner of an IPad, I would be interested in suggestions as the
best sat tracking software.
Tks and 73s
Jim G3WGM
How would attitude be controlled so the thrust is in the correct direction?
Spin stabilization about the maximum moment off inertia axis is probably the
best choice. This would require a magnetic torquing system.
Another issue is the thrust needs to be directed through the spacecraft's
Try driving at 17,500 mph...
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Tom Williams
Sent: Saturday, December 31, 2011 12:43 PM
To: Nico Janssen
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: ARISSat-1 (37772) decay
Do we really
for a project that is far more expensive
than a Phase 3 program. The bottom line: the benefit of the fixed antenna is
outweighed by the negative factors, first and foremost being cost.
I hope this helps.
73, Ken Ernandes N2WWD
Sent from my iPad
On Oct 10, 2011, at 5:23 PM, ka9qjg ka9
Unfortunately it's not a simple formula, but rather a process. To compute, you
need to not only propagate the satellite orbit (as is done in a tracking
program), but also need an algorithm to generate positions of the Sun relative
to the Earth. (The latter is available in a book called
It is not an uncertainty. A large satellite can break up and different pieces
can re-enter at different times. I experienced this working the orbital decay
of the Apollo 9 Lunar Module back in 1981.
FYI Apollo 9 did a lunar landing rehearsal in Earth orbit.
73 Ken N2WWD
Sent from my iPad
It's an opportunity for the SpaceX guys to step up to the plate.
Ken Ernandes, N2WWD
Sent from my iPad
On Aug 24, 2011, at 1:41 PM, B J va6...@gmail.com wrote:
snip
Goober,
Very Bad news.
Farrell
snip
http://www.nasa.gov/mission_**pages/station/living/index.**htmlhttp
It works well to fill a PVC pipe with a wood dowel the size of the pipe's inner
diameter. Then you just need to weatherproof the ends of the pipe with caps or
otherwise.
73, Ken N2WWD
On Feb 24, 2011, at 10:58 AM, Glen Zook gz...@yahoo.com wrote:
PVC is NOT a structural material. You can
But if you fill it with the wood dowels, they stay relatively straight and also
won't get crushed by the antenna U-bolts.
73, Ken N2WWD
On Feb 24, 2011, at 12:07 PM, Bob Bruninga bruni...@usna.edu wrote:
PVC is NOT a structural material
And no matter how you disguise it with paint or
I'm not normally one to throw cold water on creative ideas, but I will put
myself in the position of the potential manufacturer. What any manufacturer
would need to even contemplate this project is good answers to a few basic
questions:
1. Can I come up with a design to these specifications
Your statement is correct, however there is an issue of context. Most
satellite tracking software uses Simplified General Perturbations No. 4
(SGP4) as an orbit propagator. SGP4 is one of several orbit propagation
algorithms that presume the Earth to be the central attracting body (as both
Azimuth is referenced to True North.
Some software might allow magnetic, but that would likely be an optional
alternative to true north.
73, Ken N2WWD
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Randy
Sent: Saturday, January
Bob and Dan -
I sympathize with what you're saying and know you both have AMSAT's best
interests at heart. But unfortunately I don't see this exchange going in a
positive direction.
We all know this is not the first time somebody has come on this mailing list
lacking a constructive motive.
Dan -
Great points - especially #4 !!!
73, Ken Ernandes N2WWD
-Original Message-
From: Daniel Schultz n8...@usa.net
Sent: Oct 18, 2009 11:51 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: THE DMSP launch
Someone wrote:
as I recall there were 50 some odd pounds of ballast launched
Dan -
Great points - especially #4 !!!
73, Ken Ernandes N2WWD
-Original Message-
From: Daniel Schultz n8...@usa.net
Sent: Oct 18, 2009 11:51 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: THE DMSP launch
Someone wrote:
as I recall there were 50 some odd pounds of ballast launched
The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from
Geosynchronous Earth Orbit (GEO).
73, Ken N2WWD
-Original Message-
From: Joe n...@mwt.net
Sent: Sep 15, 2009 12:07 PM
To: BB amsat-bb@amsat.org
Subject: [amsat-bb] Geosyro orbit.
Hi All,
I have a couple of
Great points Dan! I can think of anything I could add.
73, Ken N2WWD
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf
Of Daniel Schultz
Sent: Sunday, August 23, 2009 12:48 AM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Don't Fly
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