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[jamsat-bb:6190] Re: Updated Phase 3D Orbital Estimate -- for 24 hour launch delay
JA5FNX田村です。
皆さんこんにちは!
沢山の方、出てきていただいてありがとうございました。
明日は!本番です。練習が出来ましたので少し上手に出来るかな??
明日もよろしくお願いします。
それから、
新しい、軌道要素を転載します。
ではまた。
Forwarded by Bunshiro Tamura <ja5fnx@dokidoki.ne.jp>
---------------- Original message follows ----------------
From: "Ken Ernandes" <n2wwd@mindspring.com>
To: "AMSAT BBS" <amsat-bb@AMSAT.Org>
Cc: "David H. Ransom, Jr." <dransom@sedona.net>, "Dave Cottle" <dcottle@ozemail.com.au>
Date: Tue, 14 Nov 2000 17:33:23 -0500
Subject: [amsat-bb:36649] Updated Phase 3D Orbital Estimate -- for 24 hour launch delay
--
Below is the estimated State Vector and Keplerian Elements for
the AMSAT Phase 3D spacecraft. The vector data was computed from
Arianespace orbital parameters at the time Phase 3D is scheduled
to separate from the Ariane 5 upper stage. The Keplerian Elements
were computed, in turn, from the vector.
Vector format = 10107
Satellite Name: Phase 3D
Catalog Number: 93400
Epoch MET: 0.02983772000
0/00:42:57.979 MET
EFG E: 4321.19714449000 km
F: 10857.0727900300 km
G: -1323.5057345899 km
Edot: -3.1484853319000 km/s
Fdot: 5.75560664520000 km/s
Gdot: -0.5488001613000 km/s
ndot/2 (drag): 0.00000000771 rev/day^2
nddt/6: 0.00000E+00 rev/day^3
Bstar: 1.25668E-05 1/Earth Radii
Elset #: 1
Rev @ Epoch: 1.52588079822
Launch Window Opens: 2000-NOV-16 / 0107 UTC
Phase 3D separation: Launch + 0042:57.979
The following Keplerian elements were computed from this vector and
the scheduled date and time of the launch window opening. Updated
Keplerian elements will be computed from the vector, based on changes
to the scheduled or actual launch time.
Phase 3D
1 93400U 321.07636550 .00000001 00000-0 12567-4 0 14
2 93400 6.5034 247.6325 7357988 175.9296 13.3886 2.02435417 19
Satellite: Phase 3D
Catalog number: 93400
Epoch time: 321.07636550
Element set: 1
Inclination: 6.5034 deg
RA of node: 247.6325 deg
Eccentricity: 0.7357988
Arg of perigee: 175.9296 deg
Mean anomaly: 13.3886 deg
Mean motion: 2.02435417 rev/day
Decay rate: 7.71000e-09 rev/day^2
Epoch rev: 1
Checksum: 276
Note that "93400" is a temporary Catalog Number. A Permanent Catalog
Number and International Designator will be assigned when Phase 3D is
launched. The satellite name will also be updated with the next
sequential "OSCAR" designator.
These Keplerian elements represent a pre-launch estimate of Phase 3D's
initial orbit. The orbit will change significantly over the first year
the spacecraft is on orbit. Updates will be provided for significant
orbital changes.
The Phase 3D launch team will be publishing a similar set of Keplerian
elements. The data provided by the launch team will be "osculating"
parameters, compatible with AMSAT command station software. The
osculating elements are the exact physical representation of the orbit
as opposed to the "mean" parameters provided in this bulletin. I
provide these mean elements as they are fully compatible with the NORAD
SGP4/SDP4 orbit propagation algorithms. Tracking software that uses
the NORAD propagators should use the "mean" Keplerian elements provided
herein for the most accurate result. Tracking software using non-NORAD
orbit propagation methods should use the "osculating" elements provided
by the Phase 3D launch team for the most accurate results.
Ken Ernandes, N2WWD
n2wwd@amsat.org
http://www.mindspring.com/~n2wwd
----
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