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Paper Abstract and Keywords
Presentation 2011-12-13 11:10
Estimation for Ballistic Coefficient of a Nano-Satellite HAYATO (KSAT) from Trajectory Data
Harunobu Yoshitake, Yasunori Gozawa, Toshinori Kimura, Masanori Nishio (Kagoshima Univ.) SAT2011-56
Abstract (in Japanese) (See Japanese page) 
(in English) The ballistic coefficients of a nono-satellite at low altitude of less than 300 km are estimated from variations of satellite trajectories. The satellite analyzed is HAYATO (KSAT), which was developed by a collaboration of Kagoshima University and local venture companies and was launched on May 20, 2010 UT as a piggy-back satellite of H-IIA 17. After deployment at 300 km, the satellite rapidly decreased its altitude due to strong atmospheric drag and re-entered the atmosphere on mid July, 2010. A mean value of estimated ballistic coefficients is $3.22 \times 10^{-2}$ $m^{2}/kg$ with a maximum of $6.78 \times 10^{-2}$ $m^{2}/kg$ and a minimum of $1.12 \times 10^{-2}$ $m^{2}/kg$ during entire period from the deployment to the re-entry of the satellite. The mean value is relatively large comparing with a theoretical value of $2.31 \times 10^{-2}$ $m^{2}/kg$ given with typical satellite parameters. We have analyzed the influence of the exospheric temperature and the space environment to the estimated ballistic coefficient, but found no clear relation.at the same time and small satellite launched in the past, we would obtain the useful method of determination for nano-satellite’s ballistic coefficient.
Keyword (in Japanese) (See Japanese page) 
(in English) Nano-Satellite / KSAT / Atmospheric Drag / Ballistic Coefficient / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 336, SAT2011-56, pp. 105-108, Dec. 2011.
Paper # SAT2011-56 
Date of Issue 2011-12-05 (SAT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SAT  
Conference Date 2011-12-12 - 2011-12-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) JC-SAT 2011 
Paper Information
Registration To SAT 
Conference Code 2011-12-SAT 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation for Ballistic Coefficient of a Nano-Satellite HAYATO (KSAT) from Trajectory Data 
Sub Title (in English)  
Keyword(1) Nano-Satellite  
Keyword(2) KSAT  
Keyword(3) Atmospheric Drag  
Keyword(4) Ballistic Coefficient  
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1st Author's Name Harunobu Yoshitake  
1st Author's Affiliation Kagoshima University (Kagoshima Univ.)
2nd Author's Name Yasunori Gozawa  
2nd Author's Affiliation Kagoshima University (Kagoshima Univ.)
3rd Author's Name Toshinori Kimura  
3rd Author's Affiliation Kagoshima University (Kagoshima Univ.)
4th Author's Name Masanori Nishio  
4th Author's Affiliation Kagoshima University (Kagoshima Univ.)
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Speaker Author-1 
Date Time 2011-12-13 11:10:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2011-56 
Volume (vol) vol.111 
Number (no) no.336 
Page pp.105-108 
#Pages 4 
Date of Issue 2011-12-05 (SAT) 

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