* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Home -> Astronomy News -> Events -> Yohkoh Re-Entry
Post Info TOPIC: Yohkoh Re-Entry
Blobrana


L

Posts: 131433
Date:
Yohkoh spacecraft
Permalink  
 

20th Anniversary of the Yohkoh Launch (1991)

Yohkoh (Sunbeam in Japanese), known before launch as Solar-A, was a Solar observatory spacecraft of the Institute of Space and Astronautical Science (Japan) with United States and United Kingdom collaboration. It was launched into Earth orbit August 30, 1991 by the M-3S-5 rocket from Kagoshima Space Centre.
Read more



__________________
Blobrana


L

Posts: 131433
Date:
RE: Yohkoh Re-Entry
Permalink  
 

According to information from the Space Surveillance Network (SSN) of the USA, the Solar X-ray Observatory "Yohkoh" (SOLAR-A) re-entered the earth's atmosphere at 6:16 p.m. on September 12, 2005 (Japan Standard Time, JST) over South Asia (at around north latitude 24 degrees and east longitude 85 degrees).
It was confirmed that the satellite disappeared from the orbit. Previous analysis shows that the frame of the Yohkoh burned and vanished at re-entry and it did not fall to Earth.

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Nominal Re-entry Time:
9:30:27(UT) on September 12, 2005.

Early predicted Re-entry Time:
7:32:36(UT) on September 12, 2005.

Later predicted Re-entry Time:
12:19:30(UT) on September 12, 2005.

Re-entry path:
IMAGE

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Updated re-entry time 12 September 2005 @ 08:54 UTC ± 90 minutes

-- Edited by Blobrana at 19:21, 2005-09-12

__________________
Blobrana


L

Posts: 131433
Date:
RE: Yohkoh (SOLAR A) Re-Entry
Permalink  
 



Re-entry time 2005-09-09
Period 89.44
Inclination 31.29



TLE Data:

SOLAR A (YOHKOH)
1 21694U 91062A 05251.36651781 .01055756 68720-3 82552-3 0 2825
2 21694 031.2898 113.5002 0003407 358.3514 001.7230 16.13722955768634
1 21694U 91062A 05250.74782557 .00957753 53231-3 81550-3 0 2816
2 21694 031.2903 118.1427 0004011 006.6674 353.4132 16.12446717768530
1 21694U 91062A 05249.94283215 +.00836885 +37931-3 +78479-3 0 02865
2 21694 031.2914 124.1785 0004923 001.4458 358.6234 16.10973585768403
1 21694U 91062A 05249.88087939 .00836956 37867-3 79010-3 0 2806
2 21694 031.2910 124.6460 0004912 001.8696 358.1976 16.10874333768397
1 21694U 91062A 05249.44708104 .00882699 42282-3 86696-3 0 2790
2 21694 031.2937 127.8918 0005872 014.1472 345.8900 16.10281411768326

__________________
Blobrana


L

Posts: 131433
Date:
Yohkoh Re-Entry
Permalink  
 

The Solar X-ray Observatory "Yohkoh" (SOLAR-A) will re-enter the earth's atmosphere as it has completed its in-orbit life.

It is predicted that the main body of the Yohkoh will vaporise during re-entry; therefore it will not make land-fall.

The Yohkoh was launched aboard M-3S-II Launch Vehicle Flight No. 6 on August 30, 1991, from the Uchinoura Space Centre by the former Institute of Space and Astronautical Science of the then Ministry of Education (currently Japan Aerospace Exploration Agency or JAXA) .

Because of the changes in atmospheric density due to the Solar heating, it is impossible to predict the exact time and location of the re-entry. However, it is currently expected to happen around September 12, 2005 (Japan Standard Time, JST).


Yohkoh Orbit Data (at 2:57 a.m. on Sep. 8, 2005, JST)
Apogee altitude 247.7 Km
Perigee altitude 242.4 Km
Inclination 31.3 degrees
Period 89.3 minutes


__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
Home -> Astronomy News -> Events -> Yohkoh Re-Entry


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard