23 How to programmatically calculate orbital elements using position/velocity vectors? 2013-09-11T11:49:48.697

23 How complex was the math and physics necessary to place Apollo 11 on the moon? 2017-12-03T02:42:49.770

21 What are some specific examples of the calculations human "computers" did for the Mercury space program? 2017-01-17T23:26:22.007

19 Delta-V chart mathematics 2013-09-20T11:49:25.293

14 What branches of mathematics are widely used in astrodynamics? 2013-07-16T21:10:51.990

11 Solar sail force calculation: Angle vector 2013-12-02T10:57:50.833

11 Can I derive a combined equation for velocity of solar sail? 2013-12-02T15:15:43.057

11 Mathematics used for F9R flyback and landing 2015-12-24T13:49:56.673

9 Physics and math behind flight through solar system 2013-07-20T11:24:08.417

8 Solar sail thrust calculation 2014-05-21T08:23:00.987

8 How are gravity assists conceived? 2015-07-18T16:40:47.770

7 Gravity drag Delta-v calculation for launches to orbit 2013-08-18T17:03:39.643

7 Understanding formula for geocentric position of Moon 2016-12-20T23:23:50.417

7 How to best think of the State Transition Matrix, and how to use it to find Halo orbits? 2017-03-10T17:25:18.713

6 Transforming a covariance matrix with consider parameters 2013-11-15T13:52:07.900

6 How can I predict what an object's orbital state vectors will be in the future? 2014-03-24T15:36:54.007

6 How were Frenet frames and Gramâ€“Schmidt orthonormalization used in spacecraft orbit calculations? 2016-12-27T13:29:06.437

6 In "spacecraft talk" is nadir just a fancy word for "down"? 2017-01-09T07:57:31.793

6 Besides retarded gravitation, anything else to worry about when calculating MU69's orbit from scratch? 2017-05-11T09:22:59.667

6 How to numerically solve an optimal thrust-vectoring problem? 2017-10-15T11:36:18.130

6 Implementing control system to track position and velocity references simultaneously 2017-12-29T20:27:37.583

5 Negative photon pressure? What is the physics behind this expression? 2017-07-17T08:10:13.863

5 What are the contributions of ancient Indian astronomers in mapping of the solar system and galaxies? 2017-08-11T02:32:53.187

5 How to derive the polar form of the equations of motion? 2017-09-28T09:53:02.290

4 Taper ratio for partial space elevator 2014-12-31T18:49:26.540

4 Question about the Hohmann Transfer: why does delta-v go down when transferring to a higher orbit? 2016-03-13T22:10:23.723

4 Calculating dV to raise apoapsis at an arbitrary point of an orbit 2016-06-16T06:29:59.427

4 For the mathematical relationship between J2 (km^5/s^2) and dimensionless J2 - which one is derived from the other? 2017-09-10T06:14:51.527

4 Thrust for solar sail equation derivation 2017-12-07T22:36:44.573

3 Does the opening angle of the cone matter? 2014-05-28T04:45:42.420

3 Keplerian Orbital Elements â†” Cartesian ECEI with WGS84 Corrections 2015-09-27T16:44:51.377

3 Converting Orbital Elements to Cartesian State Vectors 2016-12-07T23:54:53.953

3 How to calculate the current position of a satellite? 2017-09-14T16:33:54.073

3 Mathematical reasoning behind pe=pa leading to maximum thrust 2018-02-17T23:26:00.837

2 Calculate time to impact on elipisoid Earth 2015-10-07T20:14:22.393

2 Generating plot of LV's performance as a function of the C3 parameter 2015-11-03T12:27:03.597

2 How are the coefficients in the EGM96 model normalized? 2015-11-08T09:16:38.753

2 Deriving the changes in Keplerian Elements induced by small impulses 2017-02-21T04:28:20.280

2 What is the "specific impulse"? 2017-03-25T14:26:17.920

2 How to rotate orbital ellipse when radial velocity is added to the orbital velocity 2017-04-16T02:30:36.750

2 What is a "synodic frame"? Can one be defined for an elliptical orbit? 2017-05-20T06:48:45.393

2 Trying to understand the two "holes" in this alt/az plot of the ISS 2017-06-23T02:03:38.327

2 Calculating the planets and moons based on Newtons's gravitational force 2017-09-05T08:56:31.237

2 Interpolate the ephemerides of the Earth 2018-03-03T15:16:35.983

1 Specifying a position and velocity of body in a Kepler simulation 2014-02-21T10:54:32.163

1 Assuming that gravity modification technology will be possible, could a mission reach Kepler - 186f (for example) in a human life span? 2014-04-27T18:10:02.650

1 Need help calculating delta-v required for Earth to Mars low orbit Hohmann transfer 2015-04-27T19:40:21.330

1 How to calculate Earth's velocity vector in ECEF? 2016-04-27T08:16:46.427

1 How to calculate the trajectory needed to enter geostationary orbit? 2016-12-22T17:23:21.860

1 "Deep space" corrections in SGP4; how does it account for the Sun's and Moon's gravity? 2017-11-25T07:32:53.820

1 How to plot a Clohessy Wiltshire trajectory on MATLAB? 2018-02-23T15:16:23.150

0 Terminal velocity on Europa 2014-12-17T00:14:19.550

0 Has @NASA lost its Space Math? 2017-04-29T05:33:32.777

0 Equation for orbital period around oblate bodies, based on J2? 2018-03-06T04:03:44.573