Re: Yaogan

From: JAY RESPLER via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 16 Mar 2021 14:16:49 -0400
Here are my observations of the last launch.
I can post earlier observations if desired.
'D' has about the same Intrinsic Mag as the payloads.
'B' is almost 2 magnitudes fainter.


2021 Mar  11  Thu evening  *** Times are PM EST  ***  1847  527
47694 OBJECT D    21-14D IM=48 LAR 5.0
20 52 42 238 67 25 5.9=57 0 3 686 33 737 71 646 25.6
  H  M  S Azi El Dir Mg   Dy F Ht Shd Rng Phs RA  Dec

2021 Mar  13  Sat evening  *** Times are PM EST  ***  1850  523
  H  M  S Azi El C Dir Mag  Dy F Hgt Shd Rng Phs RA Dec
47695 YAOGAN-31J 21-14E IM=46 LAR 5.0
20 26 25 308 79 C 93 5.8=54 0 4 682 232 694 73 7 3 46.4
47691 YAOGAN-31G 21-14A IM=48 Lar 5.0
20 29 31 308 76 C 93 5.9=57 0 4 682 227 700 75 650 47.8
47693 YAOGAN-31H 21-14C IM=43 LAR 5.0
20 51 18 297 58   80 6.4=57 0 4 704 225 805 89 526 47.2

2021 Mar  14  Sun morning  *** Times are AM EST  ***  1850  523
47692 OBJECT B 21-14B  IM=65 LAR 5.0
  4 48 43   0 85 33 5.8=73  1 6 688 523 690 74 1619 45.3
  H  M  S Azi El Dir  Mag Dys F Hgt Shd Rng Phs R A Dec

-
Jay Respler
Monroe Township, New Jersey

On 3/16/21 9:58 AM, Bob Christy via Seesat-l wrote:
> Space-Track classifies them as part of the launch vehicle. Maybe they are part of a stacking structure to hold the three satellites before release, It's possible they may be similar to the SYLDA used by Arianespace for multiple payloads.
>
> I've used material from a couple of my blog entries together with a detailed extract from my satellite database to pull together the following, it includes all catalogued debris:
> https://www.zarya.info/Diaries/China/Yaogan/Yaogan31.php
>
> The page is not yet indexed at the website so you'll need to bookmark it to find it again.
>
> Does anyone have observations of, or comments on, the brightness of the objects that Space-Track classes as having a "Large" RCS?
>
> Bob Christy
>
>> On 16 Mar 2021, at 02:21, JAY RESPLER via Seesat-l <seesat-l_at_satobs.org> wrote:
>>
>> On the last few launches, there are 3 Yaogan and a rocket.
>> What are the other 2 large objects?
>>
>> -
>> Jay Respler
>> Monroe Township, New Jersey
>>
>>> On 3/14/21 4:27 AM, C. Bassa via Seesat-l wrote:
>>> Object E [47858/21020E] was seen. This is one of the 6 objects of the
>>> YAOGAN 31 Group 04 launch which happened at 02:19UTC earlier on March
>>> 13th. This object was clearly variable, so may be the rocket body.
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Received on Tue Mar 16 2021 - 13:17:43 UTC

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