CAS-7B on Hyperbola 1

Satellites & Observations Launches
1

The CAS-7B cubesat is slated for launch on the Hyperbola-1 launch vehcile on July 22, 2019 at 05:00:00UTC from Jiuquan, China.

The preliminary TLE is below (300km circular orbit at 42.7 deg inclination):

CAS-7B(BP-1B)
1 99999U          19203.21831019 -.00000000  00000-0  00000-0 0 00008
2 99999 042.7339 005.2478 0013606 285.8754 218.2911 15.94575752000011

This is from https://www.amsat.org/pipermail/amsat-bb/2019-July/073970.html

It looks like the cubesat will deploy a ball/balloon. This will drastically increase its drag, and at that low altitude, its lifetime could be as short as a week, or as long as a month.

More information at:
https://amsat-uk.org/tag/cas-7b/
https://www.amsat.org/camsat-cas-7b-is-ready-for-june-launch/

1 Like
2

The launch time has been changed to July 25, 2019 at 05:00:00UT.

Adjusting the preliminary TLE for the new launch time yields:

CAS-7B(BP-1B)  for 2019-07-25T05:00:00 launch
1 74001U 19900A   19206.21831019  .00000000  00000-0  00000-0 0    07
2 74001  42.7339   8.2047 0013606 285.8754 218.2911 15.94575752    02
1 Like
3

Thanks @cgbsat for the TLE. I have created CAS-7B with temporary norad id 99819.

I have added the two known transmitters:

  • CW at 435.715 MHz
  • V/U FM at 145.900 MHz for uplink and 435.690 MHz for downlink

In IARU coordination, frequency for downlink is 435.600 MHz however in this and this links that are more recent the frequency is the one I’ve added.

I’ve also scheduled a couple of observations for the first 3 hours from launch… as always there is a chance that the launch is delayed for a couple of hours or postponed for another day, so if it’s not launched in time I’ll re-schedule them.

4

from https://www.amsat.org/pipermail/amsat-bb/2019-July/074149.html

Hello,

CAS-7B will be launched today, TLE is as follows, CAMSAT is looking forward to receive CW beacon record.

Thank you for your help!

73
Alan, BA1DU

-------- Forwarding messages --------
From: “Alan Kung via AMSAT-BB” <amsat-bb at amsat.org>
Date: 2019-07-19 06:34:41
To: amsat-bb at amsat.org
Subject: [amsat-bb] CAS-7B (BP-1B) TLE Update

Planned to launch CAS-7B at 05:00:00UTC on July 25, 2019, the launch vehicle Hyperbola-1 will run for 862.0206 seconds and then CAS-7B satellite will be deployed at 05:14:22.0206

CAS-7B(BP-1B)
1 99999U          19206.21831019 -.00000000  00000-0  00000-0 0 00001
2 99999 042.7339 008.2068 0013606 285.8754 218.2911 15.94575754000011

73
Alan, BA1DU

5

Only one object from this launch so far (44443) and it matches well: https://twitter.com/vk5qi/status/1154675589845880832

6

I’ve changed CAS-7B to follow OBJECT C (44443). Is the only available from this deployment and fits good enough.