Merge branch 'patch-13.1.1' into 'release-13.1'

release 13.1.1

See merge request orekit/orekit!952

Author: Serrof

.gitignore

@@ -9,6 +9,6 @@ target
 /lib
 *.class
 .idea/
-orekit.iml
+*.iml
 hs_err_pid*
 replay_pid*

NOTICE.txt

@@ -2,7 +2,7 @@ OREKIT
 Copyright 2002-2025 CS GROUP
 
 This product includes software developed by
-CS GROUP (https://www.csgroup.eu/)
+CS GROUP (https://www.cs-soprasteria.com/en/)
 
 This product includes software developed by
 Bruce R. Bowman (HQ AFSPC, Space Analysis Division)
@@ -29,10 +29,10 @@ This product includes software translated from original work developed by
 Mickaël Gastineau (CNRS - Observatoire de Paris - IMCCE)
 
 This product includes software translated from original work developed by
-The Apache Software Foundation (http://www.apache.org/)
+The Apache Software Foundation (https://www.apache.org/)
 
 This product depends on software developed by
-The Apache Software Foundation (http://www.apache.org/)
+The Apache Software Foundation (https://www.apache.org/)
 
 This product depends on software developed by
 The Hipparchus project (https://hipparchus.org/)
@@ -44,4 +44,4 @@ This product includes software translated from original work developed by
 Dominik Brodowski
 
 This product includes software translated from original work developed by
- Duncan Agnew and copyright 2008 IERS Conventions center
+Duncan Agnew and copyright 2008 IERS Conventions center

README.md

@@ -8,13 +8,12 @@
 
 > An accurate and efficient core layer for space flight dynamics applications
 
-[![](http://img.shields.io/:license-apache-blue.svg)](http://www.apache.org/licenses/LICENSE-2.0.html)
+[![](https://img.shields.io/:license-apache-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
 [![](https://sonar.orekit.org/api/project_badges/measure?project=orekit%3Aorekit&metric=alert_status)](https://sonar.orekit.org/dashboard?id=orekit%3Aorekit)
 [![](https://sonar.orekit.org/api/project_badges/measure?project=orekit%3Aorekit&metric=coverage)](https://sonar.orekit.org/dashboard?id=orekit%3Aorekit)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.7249096.svg)](https://doi.org/10.5281/zenodo.7249096)
 
 
-
 [Orekit](https://www.orekit.org) is a low level space dynamics library written
 in Java. Orekit is designed to be easily used in very different contexts, from
 quick studies up to critical operations.
@@ -25,33 +24,33 @@ handle them (conversions, propagations, pointing, events detection, orbit determ
 
 # Features
 
-- **Accurate Orbit Propagation:**  
+- **Accurate Orbit Propagation:**
   Supports analytical, semianalytical, numerical, and TLE-based propagation.
 
-- **Flexible Orbit and Attitude Models:**  
+- **Flexible Orbit and Attitude Models:**
   Easily switch between Cartesian, Keplerian, circular, and equinoctial orbit representations.
   Includes standard and customizable attitude laws (e.g., nadir, target pointing...).
 
-- **Event Detection:**  
+- **Event Detection:**
   Built-in detectors for eclipses, ground station visibility...
 
-- **Maneuver Modeling:**  
+- **Maneuver Modeling:**
   Supports impulse and continuous maneuvers with integration into propagation and event detection.
 
-- **Robust Time and Reference Frames:**  
+- **Robust Time and Reference Frames:**
   High-precision time handling with multiple time scales and leap second support.
   Reference frames for Earth-centered and inertial calculations.
 
-- **Orbit Determination:**  
+- **Orbit Determination:**
   Tools for orbit fitting, parameter estimation, and measurement processing.
 
-- **Reliable Earth and Environmental Models:**  
+- **Reliable Earth and Environmental Models:**
   Includes Earth shape and potential for realistic simulations.
 
-- **Standard Format and Data Handling:**  
+- **Standard Format and Data Handling:**
   Supports reading and writing common space data formats for easy integration and interoperability.
 
-- **Open Source and Easy Integration:**  
+- **Open Source and Easy Integration:**
   Thanks to its Apache License 2.0.
 
 - [**And much more !**](https://www.orekit.org/site-orekit-development/index.html)
@@ -155,7 +154,7 @@ Keplerian parameters: {a: 7000000.0; e: 0.001; i: 15.000000000000002; pa: 30.000
 ### 2. Create a `Propagator`
 
 Now that we have defined an orbit, we can create a `Propagator` to specify how the orbit will be propagated through
-time. 
+time.
 
 In this case we will create a basic `KeplerianPropagator`:
 ```java
@@ -236,12 +235,12 @@ public static void main(String[] args) {
     double pa = FastMath.toRadians(30); // Perigee Argument [rad]
     double raan = FastMath.toRadians(45); // Right Ascension of the Ascending Node[rad]
     double anomaly = FastMath.toRadians(60); // Anomaly [rad]
-  
+
     PositionAngleType positionAngleType = PositionAngleType.MEAN; // Type of anomaly angle used (MEAN, TRUE, ECCENTRIC)
     Frame inertialFrame = FramesFactory.getGCRF(); // Earth-Centered Inertial frame
     AbsoluteDate date = new AbsoluteDate(2002, 1, 1, 0, 0, 0, TimeScalesFactory.getUTC()); // Date of the orbit
     double mu = Constants.EIGEN5C_EARTH_MU; // Earth's standard gravitational parameter used in EIGEN-5C gravity field model
-  
+
     Orbit orbit = new KeplerianOrbit(sma, ecc, inc, pa, raan, anomaly,
                                      positionAngleType, inertialFrame, date, mu);
 
@@ -266,16 +265,17 @@ public static void main(String[] args) {
 
 ## Tutorials
 
-For more advanced usage of Orekit, check out
-the [Official Orekit tutorials repository](https://gitlab.orekit.org/orekit/orekit-tutorials).
+For more advanced usage of Orekit, check out the
+[Official Orekit tutorials repository](https://gitlab.orekit.org/orekit/orekit-tutorials).
 
 ## Documentation
 
 The following documentation is available:
 
 * [Latest API documentation](https://www.orekit.org/site-orekit-development/apidocs/index.html)
-* [Latest Maven site](https://www.orekit.org/site-orekit-development/) for the project overview, architecture and development,
-  detailed features list, Javadoc and a lot of other information
+* [Latest Maven site](https://www.orekit.org/site-orekit-development/) for the
+  project overview, architecture and development, detailed features list,
+  Javadoc and a lot of other information
 
 ## Getting help
 
@@ -288,8 +288,9 @@ can report bugs and suggest new features in our
 
 ## Build & Run locally
 
-Want to include your own modifications to Orekit rather than simply relying on it as a dependency ? Please check
-out [building.md](src/site/markdown/building.md)
+Want to include your own modifications to Orekit rather than simply relying on
+it as a dependency ? Please check out
+[building.md](src/site/markdown/building.md)
 
 ## Python wrapper
 
@@ -330,8 +331,8 @@ interested in helping!
 ## Dependencies
 
 Orekit relies on the following
-[Free and Open-Source Software](https://en.wikipedia.org/wiki/Free_and_open-source_software) libraries,
-all released under business friendly FOSS licenses.
+[Free and Open-Source Software](https://en.wikipedia.org/wiki/Free_and_open-source_software)
+libraries, all released under business friendly FOSS licenses.
 
 ### Compile-time/run-time dependencies
 
@@ -340,7 +341,7 @@ all released under business friendly FOSS licenses.
 
 ### Test-time dependencies
 
-* [JUnit 5](http://www.junit.org/), a widely used unit test framework released
+* [JUnit 5](https://junit.org/), a widely used unit test framework released
   under the Eclipse Public License, version 1.0.
 
 * [Mockito](https://site.mockito.org/), a mocking framework for unit tests,
@@ -351,12 +352,14 @@ More detailed information is available in the
 
 # How to cite
 
-To cite Orekit in publications, please refer to the following Digital Object Identifier for the latest release: [10.5281/zenodo.7249096](https://doi.org/10.5281/zenodo.7249096)
+To cite Orekit in publications, please refer to the following Digital Object
+Identifier for the latest release:
+[10.5281/zenodo.7249096](https://doi.org/10.5281/zenodo.7249096)
 
 For a specific version, search the zenodo website for their respective DOI.
 
 # License
 
-Orekit is licensed by [CS GROUP](https://www.cs-soprasteria.com/) under
-the [Apache License, version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html).
+Orekit is licensed by [CS GROUP](https://www.cs-soprasteria.com/en/) under the
+[Apache License, version 2.0](https://www.apache.org/licenses/LICENSE-2.0.html).
 A copy of this license is provided in the [LICENSE.txt](LICENSE.txt) file.

pom.xml

@@ -3,7 +3,7 @@
   <groupId>org.orekit</groupId>
   <artifactId>orekit</artifactId>
   <packaging>jar</packaging>
-  <version>13.1</version>
+  <version>13.1.1</version>
   <name>OREKIT</name>
   <url>https://www.orekit.org/</url>
 
@@ -50,7 +50,7 @@
     <orekit.orekit.cyclonedx-maven-plugin.version>2.9.1</orekit.orekit.cyclonedx-maven-plugin.version>
     <orekit.mathjax.config>&lt;script type="text/x-mathjax-config"&gt;MathJax.Hub.Config({ TeX: { extensions: ["autoload.js"]}});&lt;/script&gt;</orekit.mathjax.config>
     <orekit.mathjax.enable>&lt;script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS_CHTML"&gt;&lt;/script&gt;</orekit.mathjax.enable>
-    <orekit.hipparchus.version>4.0.1</orekit.hipparchus.version>
+    <orekit.hipparchus.version>4.0.2</orekit.hipparchus.version>
     <orekit.junit.version>5.13.2</orekit.junit.version>
     <orekit.hamcrest.version>3.0</orekit.hamcrest.version>
     <orekit.compiler.source>1.8</orekit.compiler.source>
@@ -417,7 +417,7 @@
 
   <organization>
     <name>CS GROUP</name>
-    <url>https://www.cs-soprasteria.com/</url>
+    <url>https://www.cs-soprasteria.com/en/</url>
   </organization>
 
   <licenses>
@@ -712,7 +712,7 @@
             <option>-extdirs</option>
             <option>${tools.jar.dir}</option>
           </additionalOptions>
-          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.csgroup.eu"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
+          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.cs-soprasteria.com/en/"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
           <links>
             <link>https://docs.oracle.com/javase/8/docs/api/</link>
             <link>https://www.hipparchus.org/apidocs/</link>
@@ -957,7 +957,7 @@
         <version>${orekit.maven-jxr-plugin.version}</version>
         <configuration>
           <linkJavadoc>false</linkJavadoc>
-          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.csgroup.eu"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
+          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.cs-soprasteria.com/en/"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
         </configuration>
       </plugin>
       <plugin>
@@ -973,7 +973,7 @@
             <option>-extdirs</option>
             <option>${tools.jar.dir}</option>
           </additionalOptions>
-          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.csgroup.eu"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
+          <bottom>Copyright &amp;copy; ${project.inceptionYear}-{currentYear} &lt;a href="https://www.cs-soprasteria.com/en/"&gt;CS GROUP&lt;/a&gt;. All rights reserved.</bottom>
           <links>
             <link>https://docs.oracle.com/javase/8/docs/api/</link>
             <link>https://www.hipparchus.org/apidocs/</link>

src/changes/changes.xml

@@ -19,6 +19,53 @@
     <title>Orekit Changes</title>
   </properties>
   <body>
+    <release version="13.1.1" date="2025-09-14" description="Orekit 13.1 is a patch release. It fixes documentation issues and various bugs, including some related to performance.">
+        <action dev="luc" type="fix" issue="1817">
+          Fixed Ionosphere Piercing Point computation in Global Ionosphere Model.
+        </action>
+        <action dev="luc" type="fix" issue="1819">
+          Added pointAtAltitude in OneAxisEllipsoid.
+        </action>
+        <action dev="serrof" type="fix" issue="1820">
+            Fix numerical error in FieldEclipseDetector.
+        </action>
+        <action dev="luc" type="fix" issue="1798">
+          Fixed time interpolation in Global Ionospheric Model (ionex files).
+        </action>
+        <action dev="serrof" type="fix" issue="1816">
+            Improved performance of STM propagation with many forces.
+        </action>
+        <action dev="luc" type="fix" issue="1812">
+          Fixed NullPointerException in Sinex bias handling.
+        </action>
+        <action dev="luc" type="fix" issue="1811">
+          Fixed observables ordering error when writing Rinex observation header.
+        </action>
+        <action dev="bryan" type="fix" issue="1808">
+            Fixed inconsistency between Abstract{Field}ODEStateInterpolator and {Field}DetectorBasedEventState for event time handling.
+        </action>
+        <action dev="sdinot" type="fix" issue="1790">
+            Fixed duplicated 13.1 version in faq.md.
+        </action>
+        <action dev="sdinot" type="fix" issue="1783">
+            Link to "changes" web page on technical site not working on develop version.
+        </action>
+        <action dev="serrof" type="fix" issue="1788">
+            Pass event detectors from attitude provider in (Field)DSSTPropagator.
+        </action>
+        <action dev="bryan" type="fix" issue="1629">
+            Fixed limitation of ECOM2 model to default data context.
+        </action>
+        <action dev="sdinot" type="fix" issue="1564">
+            Fixed dead link to in "Development Guidelines" site page.
+        </action>
+        <action dev="evan" type="fix">
+            Fix exception message when parsing a CDM with an invalid date.
+        </action>
+        <action dev="evan" type="fix">
+            Fix exception messages with FieldElements.
+        </action>
+    </release>
     <release version="13.1" date="2025-08-01" description="13.1 is a minor release.">
         <action dev="serrof" type="fix" issue="1782">
             Improve performance and accuracy of getJd.
@@ -5934,7 +5981,7 @@
       </action>
       <action dev="pascal" type="update">
         Orekit supports the two different naming patterns for bulletins B provided by IERS
-        on http://www.iers.org/ and http://hpiers.obspm.fr/eop-pc/.
+        on https://www.iers.org/ and https://hpiers.obspm.fr/eop-pc/.
       </action>
       <action dev="luc" type="update">
         the predefined times scales (TAI, UTC ...) are now built using a factory. The various