✦
Sirius Binary System
The brightest star in Earth's night sky is actually a binary: Sirius A
(A1V, 9940 K, 2.06 M☉) and Sirius B (DA2 white dwarf, 25,000 K,
1.018 M☉). Their orbit has a 50.13-year period, eccentricity 0.5914,
and semi-major axis of 20 AU.
☀️
Solar Parker Spiral
The Sun preset renders Parker's 1958 spiral wind model with
4 spiral arms following the interplanetary magnetic field geometry. Wind particles
are color-coded by speed and temperature, with the heliospheric current sheet visible
as the sector boundary.
🔴
Betelgeuse Supergiant
α Orionis: 764 R☉, 3500 K, ~15 M☉. The simulation features
3D Voronoi convection cells (GLSL), dual pulsation periods (P1=417d, P2=185d),
a long secondary period of 2170d, and the newly confirmed Siwarha companion
on a 5.94-year orbit at ~6.5 AU (Howell et al. 2025).
⚪
Vega Rapid Rotator
Vega (A0Vp, 9600 K) spins at ~270 km/s — about 87% of its breakup
velocity. This extreme rotation flattens the star into an oblate spheroid, creates
gravity darkening at the equator (cooler by ~2000 K), and drives a strong stellar
wind simulation.
💜
WR 102 Wolf-Rayet
WR 102 is one of the hottest known stars at ~210,000 K. Wolf-Rayet
stars lose mass at a rate up to 10⁻⁵ M☉/yr via a dense, fast stellar wind
(~2000 km/s). The simulation renders the thick wind envelope and characteristic
broad emission line spectrum.
📐
Orbital Mechanics
All orbits are integrated using Kepler's laws with eccentric anomaly
solved via Newton-Raphson iteration. The orbital plane, apsidal line, and true anomaly
are displayed in real time. Adjustable simulation speed from 1× to 1000× real time.
DragOrbit the camera
ScrollZoom in / out
Star PresetSwitch between stellar systems in the sidebar
SpeedAdjust simulation time rate
CameraFree orbit, follow star A/B, or face-on view
LabelsToggle star labels and orbital elements display