Co-rotating view of binary star system with 13 circumbinary planets orbsi 2015-03-19 | A hypothetical system.This special view is co-rotated in synchronisation with the stars' orbits.It demonstrates that the 13 planetary orbits are non-intersecting.A video of the same system viewed in the inertial frame (not corotating) is at http://www.youtube.com/watch?v=dcalYu79PmU For N-body orbit simulation see http://www.orbsi.uk/space/simulator/simulator.htm?s=00055
Ménage à trois: chaos and partner-swapping in a hypothetical triple star system orbsi 2017-12-08 | This short video presents the results of a numerical integration of the orbits of a rather unstable hypothetical triple star system. Hierarchical triple star systems are composed of a binary pair of stars, plus another star which is bound gravitationally with the binary pair. In stable systems the three stars maintain their allotted places within this hierarchy. But in hypothetical unstable systems the stars may change roles, and in this simulation there are numerous such orbital exchanges.
Possible planet with backwards orbit in Nu Octantis binary star system orbsi 2017-12-06 | Orbit simulation of a possibly real retrograde circumstellar planet in a binary star system, with a remarkably large orbit that is approximately in 5:2 resonance. Green = planet. Yellow = parent star. Red=secondary star. The simulation is shown in 3 different view frames.
Oscillating torus 1 orbsi 2016-01-27 | An attempt to model an orbital torus membrane, oscillating due to apsidal precession of all the orbits. This attempt is flawed a.k.a incorrect. Parameters e=0.7, q=1.
Oscillating torus 2 orbsi 2016-01-27 | Another (incorrect) attempt to model the oscillation of an orbital torus membrane. Viewed from 30 degrees above the torus plane of symmetry. e=0.8, q=0.25
Finding the boundary orbsi 2015-05-10 | This footage was shot during an excavation in the middle of a town in the English Midlands in the Spring of 2015. We were trying to find the lower boundary of humanly-modified deposits (the surface of natural geology). We had to go a lot deeper than we expected! Turns out we were in the middle of an old ironstone quarry, backfilled with rubble spoil mixed with bottles, jars and other early 20th century artefacts. The total depth of made ground was about 5m. You can see the orange clay surface of the natural which forms the boundary emerge towards the end of the clip.
Pulsating orbital loops around an eccentric binary orbsi 2015-04-21 | The two hypothetical stars have orbital eccentricity = 0.333. The distance between the two stars varies considerably. This produces a pulsating gravitational field. The orbital loops pulsate in synchronisation. The hypothetical circumbinary orbits of planets or particles are anticlockwise along each pulsating loop.
Group of 5 pulsating orbital loops around an eccentric binary orbsi 2015-04-19 | The hypothetical binary star system has orbital eccentricity = 0.333, which produces a pulsating gravitational field. The 5 illustrated orbital loops pulsate in sychronisation so that they never intersect. Imagine each loop is populated by thousands of small particles. The orbital direction around all 5 loops is anticlockwise, the opposite direction to the orbits of the two stars. (Please note that the apparent motion of the displayed dots on some loops is a irrelevant strobe effect of the video generation method and should be ignored).
A pulsating orbital loop around a binary star system orbsi 2015-04-16 | This movie shows a hypothetical pair of binary stars with eccentric orbits. The oval shape around the stars is a pulsating loop. The path of a hypothetical planet or particle is anticlockwise around the loop, while the loop simultaneously changes shape. This loop has orbital period = about 1.25 times the orbital period of the stars. The pulsating size and shape of the loop is the way that it adapts to the complex rotating gravitational field.
Binary star system with 13 circumbinary planets orbsi 2015-03-19 | A hypothetical star system.N-body orbit simulation of a similar system is at http://www.orbsi.uk/space/simulator/simulator.php?s=00055
Imaginary binary companion star + Sun Jupiter Saturn Uranus Neptune orbsi 2015-02-28 | Our Sun with an invented binary companion star, distance 100AU, same mass as Sun, circular stellar orbits. Orange=Jupiter, green=Saturn, purple=Uranus, blue=Neptune. Time readout is in earthyears. Binary orbital period is approx 700 years.The higher quality HTML simulation is at http://www.orbsi.uk/space/html5/orbsim.htm?v=1&s=00048(requires fast modern browser with full HTML5 support).
Binary star system with 3 circumbinary planets (hypothetical) orbsi 2015-02-27 | The stars have equal mass and circular orbits.The planets have negligible mass, and orbital periods = 1, 0.5, and 0.33 (relative to the stars' orbital period).The higher quality HTML simulation is at http://www.orbsi.uk/space/html5/orbsim.htm?v=1&s=00046(requires fast modern browser with full HTML5 support).
Binary star system with 15 planets (hypothetical) orbsi 2015-02-26 | Orbit simulation of a hypothetical star system, based loosely on the real Nu Octantis binary system, but with a generous helping of added planets.Light red star mass = 1.4 x our Sun.Light blue star mass = 0.5 x our Sun.Orange planet mass= 4 x Jupiter.The 14 other planets each have mass = 1 x our Earth.The higher-quality HTML simulation is at http://www.orbsi.uk/space/html5/orbsim.htm?v=1&s=00045(requires fast modern browser with full HTML5 support).
Figure-8 triple star system with planet (hypothetical) orbsi 2015-02-26 | Hypothetical triple star + 1 planet system.The higher-quality HTML5 simulation is at http://www.orbsi.uk/space/html5/orbsim.htm?v=1&s=00042 (requires fast modern browser with full HTML5 support).
An orbital streamline in the disk of a galaxy orbsi 2015-01-03 | These graphics demonstrate how in a galactic disk a large number of stars (each with their own individual orbits) may coordinate to form a "streamline". A sample of 95 stars all belonging to one streamline are shown. Each of these stars has its own individual orbit, which (because of the significant apsidal precession) is rosette-shaped and not closed. To show the shape of one of these orbits, one of the stars is highlighted and its orbit traced in red. To form a streamline, the individual orbits of these stars are precisely choreographed so that the stars together form a neatly precessing closed elliptical shape, The advantage of forming a streamline is freedom from collision. The disk of a galaxy can be regarded as being made up of many streamlines, of various sizes, nested within each other.These graphics were created by software which numerically integrates the orbit of one star, and measures its apsidal precession rate, and from those results generates the orbits of numerous additional stars, to create a streamline. ThIs simulation was done in a simple logarithmic galactic potential, in which the nett gravitational attraction toward the galactic centre is proportional to the inverse of the distance from the galactic centre.http://www.academia.edu/9944858
