eso2612b.mp4
Summary: This video visualizes the elliptical orbit of the star S301 around the supermassive black hole Sagittarius A* (Sag A*). It tracks S301 and other stars over a four-year period, highlighting S301's closest approach to Sag A* and referencing Neptune's orbit for scale.
The video presents a scientific visualization of stellar motion around Sagittarius A* (Sag A*), the supermassive black hole at the center of the Milky Way. Set against a dark, grid-patterned background, a central black square displays the celestial mechanics. A glowing blue ellipse marks 'Neptune's Orbit' for comparative scale. The primary focus is the star S301, whose complete elliptical orbit is traced in blue, showcasing its movement around the central red/orange point labeled 'Sag A*'. The visualization highlights S301's closest approach on 2023-01-14. Throughout the video, other smaller, glowing orange dots representing additional stars appear and move around Sag A*, illustrating their complex orbits. A timeline at the bottom spans from early 2021 to mid-2025, with a marker progressing through the dates, indicating the passage of time as the stars follow their trajectories.
Playback guide
1. startTime: 00:00 endTime: 00:02 label: Initial view: Sag A* and 'Neptune's Orbit' shown. S301 orbit begins to appear. 2. startTime: 00:02 endTime: 00:05 label: S301's orbit continues to develop, other stars appear. Timeline progresses to 2021-07-29, showing S301 and date label. 3. startTime: 00:05 endTime: 00:10 label: S301 continues its elliptical path around Sag A*. Timeline advances. 4. startTime: 00:10 endTime: 00:13 label: S301 makes its closest approach, labeled 'S301 2023-01-14'. Other stars are visible. 5. startTime: 00:13 endTime: 00:18 label: S301 moves past its periapsis, orbit continues to be drawn. Timeline advances to 2024-05-25. 6. startTime: 00:18 endTime: 00:24 label: S301 completes a significant portion of its orbit. Timeline reaches 2025-07-07, showing S301's position and other stars.