International ISO Standard IS026900 Space data and information transfer Second edition systems - Orbit data messages 2024-02 Systemes de transfert des informations et données spatiales- Messages pour données d'orbites Referencenumber ISO 26900:2024(en) @ ISO 2024 IS0 26900:2024(en) COPYRIGHT PROTECTED DOCUMENT CIS02024 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below orIso's memberbody inthe countryofthe requester. ISO copyright office CP 40i:Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email:[email protected] Website: www.iso.org Published in Switzerland @ IS0 2024 - All rights reserved i IS0 26900:2024(en) Foreword @ Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internationa organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISo/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of Iso document should be noted (see www.iso.org/directives). Iso draws attention to the possibility that the implementation of this document may involve the use of (a) patent(s). IsO takes no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, Iso had not received notice of (a) patent(s) which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents. Iso shall not be held responsible for identifying any or all such patent rights. Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation of the voluntary nature of standards, the meaning of Iso specific terms and expressions related to conformity assessment, as well as information about Iso's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html. 502.0-B-3, Apil 2023) and drafted in accordance with its editorial rules. It was assigned to Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations and adopted under the"fast-track procedure" This second edition cancels and replaces the first edition (Is0 26900:2012), which has been technically revised. The main changes compared to the previous edition are as follows: Changes in the messages: The OCM was added to provide better support for ISo Technical Committee 20, Subcommittee 14 objectives (see section 6). MESSAGE_ID was added to the OPM, OMM, and OEM to provide better satisfaction of requirement P10 (identification and annotation of messages). EPHEMERIS_TYPE was updated in the OMM to reflect currently used numbering scheme. BSTAR and MEAN_MOTION_DDOT fields are paired with BTERM and AGOM parameters to support the SGP and SGP4 propagators as well as the new SGP4-XP propagator, respectively. @ IS0 2024 - All rights reserved ili IS0 26900:2024(en) Changes in