1 /* Copyright 2002-2025 CS GROUP
2 * Licensed to CS GROUP (CS) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * CS licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.orekit.propagation.semianalytical.dsst.forces;
18
19 import org.orekit.propagation.semianalytical.dsst.utilities.AuxiliaryElements;
20
21 /**
22 * This class is a container for the common parameters used in {@link DSSTNewtonianAttraction}.
23 * <p>
24 * It performs parameters initialization at each integration step for the central body attraction.
25 * </p>
26 * @author Bryan Cazabonne
27 * @since 10.0
28 */
29 public class DSSTNewtonianAttractionContext extends ForceModelContext {
30
31 /** Standard gravitational parameter μ for the body in m³/s². */
32 private final double gm;
33
34 /**
35 * Simple constructor.
36 *
37 * @param auxiliaryElements auxiliary elements related to the current orbit
38 * @param parameters values of the force model parameters
39 */
40 public DSSTNewtonianAttractionContext(final AuxiliaryElements auxiliaryElements, final double[] parameters) {
41 super(auxiliaryElements);
42 this.gm = parameters[0];
43 }
44
45 /** Get standard gravitational parameter μ for the body in m³/s².
46 * @return gm
47 */
48 public double getGM() {
49 return gm;
50 }
51 }