Re: Elset estimates for upcoming ELECTRON launch

From: Robert Holdsworth via Seesat-l <seesat-l_at_satobs.org>
Date: Fri, 12 Jun 2020 02:36:57 +1200
Rocketlab has tweeted that launch is now scheduled for NET 0443 on June 13
UTC. They decided not to try for June 12 as more strong winds are forecast.
As I believe they were also forecast for the 11th I wonder why they
attempted it then but I guess they have to keep the clients happy by trying
and hoping that a break in the weather does occur!

If it doesn't work out on the 13th the forecast for the launch area on 14
June is for showers with light winds.

Robert
Wellington, New Zealand


On Thu, 11 Jun 2020, 18:37 Robert Holdsworth, <robbonz_at_gmail.com> wrote:

> Scrubbed owing to high winds at the launch site.
> Next launch attempt not yet announced.
>
> Robert
>
> On Wed, 10 Jun 2020, 02:39 Marco Langbroek via Seesat-l, <
> seesat-l_at_satobs.org> wrote:
>
>>
>> On 11 Jun, Rocketlab will try to launch an Electron rocket from Mahia
>> LC-1 in
>> New Zealand, that is a rideshare for several smallsats including three NRO
>> payloads, as well as Pathfinder M2 and
>> Navigational Warnings indicate a launch into a ~97-degree inclined orbit.
>>
>> Below are three estimated elsets for the start, middle and end of the
>> launch
>> window (4:43-6:32 UT, 2020 June 11):
>>
>>
>> ELECTRON                            for launch 2020-06-11 04:43:00 UT
>> 1 70000U 20999A   20163.19652778  .00000000  00000-0  00000-0 0    06
>> 2 70000 097.0000 336.0043 0007269 231.0041 325.4394 15.21936767    06
>>
>> ELECTRON                            for launch 2020-06-11 05:38:00 UT
>> 1 70001U 20999A   20163.23472222  .00000000  00000-0  00000-0 0    06
>> 2 70001 097.0000 349.7919 0007269 231.0041 325.4394 15.21936767    00
>>
>> ELECTRON                            for launch 2020-06-11 06:32:00 UT
>> 1 70002U 20999A   20163.27222222  .00000000  00000-0  00000-0 0    04
>> 2 70002 097.0000 003.3289 0007269 231.0041 325.4394 15.21936767    04
>>
>>
>> Note that you can adjust any of these elsets to another launch time using
>> my
>> 'TLE from Proxy' program (http://software.langbroek.org)
>>
>> Note a possible time uncertainty in the pass times of at least 2 minutes
>> on
>> first revolution (and more after that)!
>>
>> There is also some leeway in the orbital inclination possible, and with
>> this the
>> exact orbital plane.
>>
>> Orbital altitude is an estimate based on what has been published for
>> ANDESITE,
>> one of the civilian payloads.
>>
>> Elsets are also available through the 'Launchtower'.
>>
>> - Marco
>>
>>
>>
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Received on Thu Jun 11 2020 - 09:38:19 UTC

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